by Veerasenareddy Burru

[permalink] [raw]

Subject: RE: [EXT] Re: [PATCH net-next v3 4/7] octeon_ep: enhance control mailbox for VF support

> -----Original Message-----
> From: Maciej Fijalkowski <[email protected]>
> Sent: Wednesday, February 15, 2023 7:55 AM
> To: Veerasenareddy Burru <[email protected]>
> Cc: [email protected]; [email protected]; Abhijit Ayarekar
> <[email protected]>; Sathesh B Edara <[email protected]>;
> Satananda Burla <[email protected]>; [email protected]; David S.
> Miller <[email protected]>; Eric Dumazet <[email protected]>;
> Jakub Kicinski <[email protected]>; Paolo Abeni <[email protected]>
> Subject: [EXT] Re: [PATCH net-next v3 4/7] octeon_ep: enhance control
> mailbox for VF support
>
> External Email
>
> ----------------------------------------------------------------------
> On Mon, Feb 13, 2023 at 09:14:19PM -0800, Veerasenareddy Burru wrote:
> > Enhance control mailbox protocol to support following
> > - separate command and response queues
> > * command queue to send control commands to firmware.
> > * response queue to receive responses and notifications from
> > firmware.
> > - variable size messages using scatter/gather
> > - VF support
> > * extend control command structure to include vfid.
> > * update APIs to accept VF ID.
> >
> > Signed-off-by: Abhijit Ayarekar <[email protected]>
> > Signed-off-by: Veerasenareddy Burru <[email protected]>
> > ---
> > v2 -> v3:
> > * no change
> >
> > v1 -> v2:
> > * modified the patch to work with device status "oct->status" removed.
> >
> > .../marvell/octeon_ep/octep_ctrl_mbox.c | 318 +++++++++-------
> > .../marvell/octeon_ep/octep_ctrl_mbox.h | 102 ++---
> > .../marvell/octeon_ep/octep_ctrl_net.c | 349 ++++++++++++------
> > .../marvell/octeon_ep/octep_ctrl_net.h | 176 +++++----
> > .../marvell/octeon_ep/octep_ethtool.c | 7 +-
> > .../ethernet/marvell/octeon_ep/octep_main.c | 80 ++--
> > 6 files changed, 619 insertions(+), 413 deletions(-)
>
> patch is big, any ways to split it up? for example, why couldn't the "VF
> support" be pulled out to a sequent commit?
>

Will separate out the changes to the APIs to accept function ID

> >
> > diff --git a/drivers/net/ethernet/marvell/octeon_ep/octep_ctrl_mbox.c
> > b/drivers/net/ethernet/marvell/octeon_ep/octep_ctrl_mbox.c
> > index 39322e4dd100..cda252fc8f54 100644
> > --- a/drivers/net/ethernet/marvell/octeon_ep/octep_ctrl_mbox.c
> > +++ b/drivers/net/ethernet/marvell/octeon_ep/octep_ctrl_mbox.c
> > @@ -24,41 +24,49 @@
> > /* Time in msecs to wait for message response */
> > #define OCTEP_CTRL_MBOX_MSG_WAIT_MS 10
> >
> > -#define OCTEP_CTRL_MBOX_INFO_MAGIC_NUM_OFFSET(m) (m)
> > -#define OCTEP_CTRL_MBOX_INFO_BARMEM_SZ_OFFSET(m) ((m) +
> 8)
> > -#define OCTEP_CTRL_MBOX_INFO_HOST_STATUS_OFFSET(m) ((m) +
> 24)
> > -#define OCTEP_CTRL_MBOX_INFO_FW_STATUS_OFFSET(m) ((m) +
> 144)
> > -
> > -#define OCTEP_CTRL_MBOX_H2FQ_INFO_OFFSET(m) ((m) +
> OCTEP_CTRL_MBOX_INFO_SZ)
> > -#define OCTEP_CTRL_MBOX_H2FQ_PROD_OFFSET(m)
> (OCTEP_CTRL_MBOX_H2FQ_INFO_OFFSET(m))
> > -#define OCTEP_CTRL_MBOX_H2FQ_CONS_OFFSET(m)
> ((OCTEP_CTRL_MBOX_H2FQ_INFO_OFFSET(m)) + 4)
> > -#define OCTEP_CTRL_MBOX_H2FQ_ELEM_SZ_OFFSET(m)
> ((OCTEP_CTRL_MBOX_H2FQ_INFO_OFFSET(m)) + 8)
> > -#define OCTEP_CTRL_MBOX_H2FQ_ELEM_CNT_OFFSET(m)
> ((OCTEP_CTRL_MBOX_H2FQ_INFO_OFFSET(m)) + 12)
> > -
> > -#define OCTEP_CTRL_MBOX_F2HQ_INFO_OFFSET(m) ((m) +
> \
> > -
> OCTEP_CTRL_MBOX_INFO_SZ + \
> > -
> OCTEP_CTRL_MBOX_H2FQ_INFO_SZ)
> > -#define OCTEP_CTRL_MBOX_F2HQ_PROD_OFFSET(m)
> (OCTEP_CTRL_MBOX_F2HQ_INFO_OFFSET(m))
> > -#define OCTEP_CTRL_MBOX_F2HQ_CONS_OFFSET(m)
> ((OCTEP_CTRL_MBOX_F2HQ_INFO_OFFSET(m)) + 4)
> > -#define OCTEP_CTRL_MBOX_F2HQ_ELEM_SZ_OFFSET(m)
> ((OCTEP_CTRL_MBOX_F2HQ_INFO_OFFSET(m)) + 8)
> > -#define OCTEP_CTRL_MBOX_F2HQ_ELEM_CNT_OFFSET(m)
> ((OCTEP_CTRL_MBOX_F2HQ_INFO_OFFSET(m)) + 12)
> > -
> > -#define OCTEP_CTRL_MBOX_Q_OFFSET(m, i) ((m) +
> \
> > - (sizeof(struct
> octep_ctrl_mbox_msg) * (i)))
> > -
> > -static u32 octep_ctrl_mbox_circq_inc(u32 index, u32 mask)
> > +/* Size of mbox info in bytes */
> > +#define OCTEP_CTRL_MBOX_INFO_SZ 256
> > +/* Size of mbox host to fw queue info in bytes */
> > +#define OCTEP_CTRL_MBOX_H2FQ_INFO_SZ 16
> > +/* Size of mbox fw to host queue info in bytes */
> > +#define OCTEP_CTRL_MBOX_F2HQ_INFO_SZ 16
> > +
> > +#define OCTEP_CTRL_MBOX_TOTAL_INFO_SZ
> (OCTEP_CTRL_MBOX_INFO_SZ + \
> > + OCTEP_CTRL_MBOX_H2FQ_INFO_SZ
> + \
> > +
> OCTEP_CTRL_MBOX_F2HQ_INFO_SZ)
> > +
> > +#define OCTEP_CTRL_MBOX_INFO_MAGIC_NUM(m) (m)
>
> This doesn't serve any purpose, does it? I know there was
> OCTEP_CTRL_MBOX_INFO_MAGIC_NUM_OFFSET but i don't see any value
> in this macro.
>

OCTEP_CTRL_MBOX_INFO_MAGIC_NUM_OFFSET is renamed to OCTEP_CTRL_MBOX_INFO_MAGIC_NUM.

> > +#define OCTEP_CTRL_MBOX_INFO_BARMEM_SZ(m) ((m) + 8)
> > +#define OCTEP_CTRL_MBOX_INFO_HOST_STATUS(m) ((m) + 24)
> > +#define OCTEP_CTRL_MBOX_INFO_FW_STATUS(m) ((m) + 144)
> > +
> > +#define OCTEP_CTRL_MBOX_H2FQ_INFO(m) ((m) +
> OCTEP_CTRL_MBOX_INFO_SZ)
> > +#define OCTEP_CTRL_MBOX_H2FQ_PROD(m)
> (OCTEP_CTRL_MBOX_H2FQ_INFO(m))
> > +#define OCTEP_CTRL_MBOX_H2FQ_CONS(m)
> ((OCTEP_CTRL_MBOX_H2FQ_INFO(m)) + 4)
> > +#define OCTEP_CTRL_MBOX_H2FQ_SZ(m)
> ((OCTEP_CTRL_MBOX_H2FQ_INFO(m)) + 8)
> > +
> > +#define OCTEP_CTRL_MBOX_F2HQ_INFO(m) ((m) + \
> > + OCTEP_CTRL_MBOX_INFO_SZ + \
> > +
> OCTEP_CTRL_MBOX_H2FQ_INFO_SZ)
> > +#define OCTEP_CTRL_MBOX_F2HQ_PROD(m)
> (OCTEP_CTRL_MBOX_F2HQ_INFO(m))
> > +#define OCTEP_CTRL_MBOX_F2HQ_CONS(m)
> ((OCTEP_CTRL_MBOX_F2HQ_INFO(m)) + 4)
> > +#define OCTEP_CTRL_MBOX_F2HQ_SZ(m)
> ((OCTEP_CTRL_MBOX_F2HQ_INFO(m)) + 8)
> > +
> > +static const u32 mbox_hdr_sz = sizeof(union octep_ctrl_mbox_msg_hdr);
> > +
> > +static u32 octep_ctrl_mbox_circq_inc(u32 index, u32 inc, u32 sz)
> > {
> > - return (index + 1) & mask;
> > + return (index + inc) % sz;
>
> previously mbox len was power-of-2 sized?
>
> > }
> >
> > -static u32 octep_ctrl_mbox_circq_space(u32 pi, u32 ci, u32 mask)
> > +static u32 octep_ctrl_mbox_circq_space(u32 pi, u32 ci, u32 sz)
> > {
> > - return mask - ((pi - ci) & mask);
> > + return sz - (abs(pi - ci) % sz);
> > }
> >
> > -static u32 octep_ctrl_mbox_circq_depth(u32 pi, u32 ci, u32 mask)
> > +static u32 octep_ctrl_mbox_circq_depth(u32 pi, u32 ci, u32 sz)
> > {
> > - return ((pi - ci) & mask);
> > + return (abs(pi - ci) % sz);
> > }
> >
> > int octep_ctrl_mbox_init(struct octep_ctrl_mbox *mbox) @@ -73,172
> > +81,228 @@ int octep_ctrl_mbox_init(struct octep_ctrl_mbox *mbox)
> > return -EINVAL;
> > }
> >
> > - magic_num =
> readq(OCTEP_CTRL_MBOX_INFO_MAGIC_NUM_OFFSET(mbox->barmem));
> > + magic_num =
> readq(OCTEP_CTRL_MBOX_INFO_MAGIC_NUM(mbox->barmem));
> > if (magic_num != OCTEP_CTRL_MBOX_MAGIC_NUMBER) {
> > - pr_info("octep_ctrl_mbox : Invalid magic number %llx\n",
> magic_num);
> > + pr_info("octep_ctrl_mbox : Invalid magic number %llx\n",
> > + magic_num);
>
> unneeded change
>
> > return -EINVAL;
> > }
> >
> > - status =
> readq(OCTEP_CTRL_MBOX_INFO_FW_STATUS_OFFSET(mbox->barmem));
> > + status = readq(OCTEP_CTRL_MBOX_INFO_FW_STATUS(mbox-
> >barmem));
> > if (status != OCTEP_CTRL_MBOX_STATUS_READY) {
> > pr_info("octep_ctrl_mbox : Firmware is not ready.\n");
> > return -EINVAL;
> > }
> >
> > - mbox->barmem_sz =
> readl(OCTEP_CTRL_MBOX_INFO_BARMEM_SZ_OFFSET(mbox->barmem));
> > + mbox->barmem_sz =
> > +readl(OCTEP_CTRL_MBOX_INFO_BARMEM_SZ(mbox->barmem));
> >
> > - writeq(OCTEP_CTRL_MBOX_STATUS_INIT,
> OCTEP_CTRL_MBOX_INFO_HOST_STATUS_OFFSET(mbox->barmem));
> > + writeq(OCTEP_CTRL_MBOX_STATUS_INIT,
> > + OCTEP_CTRL_MBOX_INFO_HOST_STATUS(mbox->barmem));
> >
> > - mbox->h2fq.elem_cnt =
> readl(OCTEP_CTRL_MBOX_H2FQ_ELEM_CNT_OFFSET(mbox->barmem));
> > - mbox->h2fq.elem_sz =
> readl(OCTEP_CTRL_MBOX_H2FQ_ELEM_SZ_OFFSET(mbox->barmem));
> > - mbox->h2fq.mask = (mbox->h2fq.elem_cnt - 1);
> > - mutex_init(&mbox->h2fq_lock);
> > + mbox->h2fq.sz = readl(OCTEP_CTRL_MBOX_H2FQ_SZ(mbox-
> >barmem));
> > + mbox->h2fq.hw_prod = OCTEP_CTRL_MBOX_H2FQ_PROD(mbox-
> >barmem);
> > + mbox->h2fq.hw_cons = OCTEP_CTRL_MBOX_H2FQ_CONS(mbox-
> >barmem);
> > + mbox->h2fq.hw_q = mbox->barmem +
> OCTEP_CTRL_MBOX_TOTAL_INFO_SZ;
> >
> > - mbox->f2hq.elem_cnt =
> readl(OCTEP_CTRL_MBOX_F2HQ_ELEM_CNT_OFFSET(mbox->barmem));
> > - mbox->f2hq.elem_sz =
> readl(OCTEP_CTRL_MBOX_F2HQ_ELEM_SZ_OFFSET(mbox->barmem));
> > - mbox->f2hq.mask = (mbox->f2hq.elem_cnt - 1);
> > - mutex_init(&mbox->f2hq_lock);
> > -
> > - mbox->h2fq.hw_prod =
> OCTEP_CTRL_MBOX_H2FQ_PROD_OFFSET(mbox->barmem);
> > - mbox->h2fq.hw_cons =
> OCTEP_CTRL_MBOX_H2FQ_CONS_OFFSET(mbox->barmem);
> > - mbox->h2fq.hw_q = mbox->barmem +
> > - OCTEP_CTRL_MBOX_INFO_SZ +
> > - OCTEP_CTRL_MBOX_H2FQ_INFO_SZ +
> > - OCTEP_CTRL_MBOX_F2HQ_INFO_SZ;
> > -
> > - mbox->f2hq.hw_prod =
> OCTEP_CTRL_MBOX_F2HQ_PROD_OFFSET(mbox->barmem);
> > - mbox->f2hq.hw_cons =
> OCTEP_CTRL_MBOX_F2HQ_CONS_OFFSET(mbox->barmem);
> > - mbox->f2hq.hw_q = mbox->h2fq.hw_q +
> > - ((mbox->h2fq.elem_sz + sizeof(union
> octep_ctrl_mbox_msg_hdr)) *
> > - mbox->h2fq.elem_cnt);
> > + mbox->f2hq.sz = readl(OCTEP_CTRL_MBOX_F2HQ_SZ(mbox-
> >barmem));
> > + mbox->f2hq.hw_prod = OCTEP_CTRL_MBOX_F2HQ_PROD(mbox-
> >barmem);
> > + mbox->f2hq.hw_cons = OCTEP_CTRL_MBOX_F2HQ_CONS(mbox-
> >barmem);
> > + mbox->f2hq.hw_q = mbox->barmem +
> > + OCTEP_CTRL_MBOX_TOTAL_INFO_SZ +
> > + mbox->h2fq.sz;
> >
> > /* ensure ready state is seen after everything is initialized */
> > wmb();
> > - writeq(OCTEP_CTRL_MBOX_STATUS_READY,
> OCTEP_CTRL_MBOX_INFO_HOST_STATUS_OFFSET(mbox->barmem));
> > + writeq(OCTEP_CTRL_MBOX_STATUS_READY,
> > + OCTEP_CTRL_MBOX_INFO_HOST_STATUS(mbox->barmem));
> >
> > pr_info("Octep ctrl mbox : Init successful.\n");
> >
> > return 0;
> > }
> >
> > -int octep_ctrl_mbox_send(struct octep_ctrl_mbox *mbox, struct
> > octep_ctrl_mbox_msg *msg)
> > +static int write_mbox_data(struct octep_ctrl_mbox_q *q, u32 *pi,
> > + u32 ci, void *buf, u32 w_sz)
>
> octep_write_mbox_data ?

Will rename in next revision.

>
> also, you only return 0 and don't check the retval, so s/static int/static void
>

Ack. Will make this change in next revision.

> > +{
> > + u32 cp_sz;
> > + u8 __iomem *qbuf;
> > +
> > + /* Assumption: Caller has ensured enough write space */
> > + qbuf = (q->hw_q + *pi);
> > + if (*pi < ci) {
> > + /* copy entire w_sz */
> > + memcpy_toio(qbuf, buf, w_sz);
> > + *pi = octep_ctrl_mbox_circq_inc(*pi, w_sz, q->sz);
> > + } else {
> > + /* copy up to end of queue */
> > + cp_sz = min((q->sz - *pi), w_sz);
> > + memcpy_toio(qbuf, buf, cp_sz);
> > + w_sz -= cp_sz;
> > + *pi = octep_ctrl_mbox_circq_inc(*pi, cp_sz, q->sz);
> > + if (w_sz) {
> > + /* roll over and copy remaining w_sz */
> > + buf += cp_sz;
> > + qbuf = (q->hw_q + *pi);
> > + memcpy_toio(qbuf, buf, w_sz);
> > + *pi = octep_ctrl_mbox_circq_inc(*pi, w_sz, q->sz);
> > + }
> > + }
> > +
> > + return 0;
> > +}
> > +
> > +int octep_ctrl_mbox_send(struct octep_ctrl_mbox *mbox,
> > + struct octep_ctrl_mbox_msg *msgs,
> > + int num)
>
> only callsite that currently is present sets num to 1, what's the point currently
> of having this arg?
>

Will remove this argument in next revision. Will bring it back when we have actual use case.

> > {
> > - unsigned long timeout =
> msecs_to_jiffies(OCTEP_CTRL_MBOX_MSG_TIMEOUT_MS);
> > - unsigned long period =
> msecs_to_jiffies(OCTEP_CTRL_MBOX_MSG_WAIT_MS);
> > + struct octep_ctrl_mbox_msg_buf *sg;
> > + struct octep_ctrl_mbox_msg *msg;
> > struct octep_ctrl_mbox_q *q;
> > - unsigned long expire;
> > - u64 *mbuf, *word0;
> > - u8 __iomem *qidx;
> > - u16 pi, ci;
> > - int i;
> > + u32 pi, ci, prev_pi, buf_sz, w_sz;
>
> RCT? you probably have this issue all over your patchset
>

Sorry for missing on this. Will fix RCT violations in next revision.

> > + int m, s;
> >
> > - if (!mbox || !msg)
> > + if (!mbox || !msgs)
> > return -EINVAL;
> >
> > + if (readq(OCTEP_CTRL_MBOX_INFO_FW_STATUS(mbox->barmem))
> !=
> > + OCTEP_CTRL_MBOX_STATUS_READY)
> > + return -EIO;
> > +
> > + mutex_lock(&mbox->h2fq_lock);
> > q = &mbox->h2fq;
> > pi = readl(q->hw_prod);
> > ci = readl(q->hw_cons);
> > + for (m = 0; m < num; m++) {
> > + msg = &msgs[m];
> > + if (!msg)
> > + break;
> >
> > - if (!octep_ctrl_mbox_circq_space(pi, ci, q->mask))
> > - return -ENOMEM;
> > -
> > - qidx = OCTEP_CTRL_MBOX_Q_OFFSET(q->hw_q, pi);
> > - mbuf = (u64 *)msg->msg;
> > - word0 = &msg->hdr.word0;
> > -
> > - mutex_lock(&mbox->h2fq_lock);
> > - for (i = 1; i <= msg->hdr.sizew; i++)
> > - writeq(*mbuf++, (qidx + (i * 8)));
> > -
> > - writeq(*word0, qidx);
> > + /* not enough space for next message */
> > + if (octep_ctrl_mbox_circq_space(pi, ci, q->sz) <
> > + (msg->hdr.s.sz + mbox_hdr_sz))
> > + break;
> >
> > - pi = octep_ctrl_mbox_circq_inc(pi, q->mask);
> > + prev_pi = pi;
> > + write_mbox_data(q, &pi, ci, (void *)&msg->hdr,
> mbox_hdr_sz);
> > + buf_sz = msg->hdr.s.sz;
> > + for (s = 0; ((s < msg->sg_num) && (buf_sz > 0)); s++) {
> > + sg = &msg->sg_list[s];
> > + w_sz = (sg->sz <= buf_sz) ? sg->sz : buf_sz;
> > + write_mbox_data(q, &pi, ci, sg->msg, w_sz);
> > + buf_sz -= w_sz;
> > + }
> > + if (buf_sz) {
> > + /* we did not write entire message */
> > + pi = prev_pi;
> > + break;
> > + }
> > + }
> > writel(pi, q->hw_prod);
> > mutex_unlock(&mbox->h2fq_lock);
> >
> > - /* don't check for notification response */
> > - if (msg->hdr.flags & OCTEP_CTRL_MBOX_MSG_HDR_FLAG_NOTIFY)
> > - return 0;
> > + return (m) ? m : -EAGAIN;
>
> remove brackets
>

Ack

> > +}
> >
> > - expire = jiffies + timeout;
> > - while (true) {
> > - *word0 = readq(qidx);
> > - if (msg->hdr.flags ==
> OCTEP_CTRL_MBOX_MSG_HDR_FLAG_RESP)
> > - break;
> > - schedule_timeout_interruptible(period);
> > - if (signal_pending(current) || time_after(jiffies, expire)) {
> > - pr_info("octep_ctrl_mbox: Timed out\n");
> > - return -EBUSY;
> > +static int read_mbox_data(struct octep_ctrl_mbox_q *q, u32 pi,
>
> same comment as for write func
>

Will fix in next revision

> > + u32 *ci, void *buf, u32 r_sz)
> > +{
> > + u32 cp_sz;
> > + u8 __iomem *qbuf;
> > +
> > + /* Assumption: Caller has ensured enough read space */
> > + qbuf = (q->hw_q + *ci);
> > + if (*ci < pi) {
> > + /* copy entire r_sz */
> > + memcpy_fromio(buf, qbuf, r_sz);
> > + *ci = octep_ctrl_mbox_circq_inc(*ci, r_sz, q->sz);
> > + } else {
> > + /* copy up to end of queue */
> > + cp_sz = min((q->sz - *ci), r_sz);
> > + memcpy_fromio(buf, qbuf, cp_sz);
> > + r_sz -= cp_sz;
> > + *ci = octep_ctrl_mbox_circq_inc(*ci, cp_sz, q->sz);
> > + if (r_sz) {
> > + /* roll over and copy remaining r_sz */
> > + buf += cp_sz;
> > + qbuf = (q->hw_q + *ci);
> > + memcpy_fromio(buf, qbuf, r_sz);
> > + *ci = octep_ctrl_mbox_circq_inc(*ci, r_sz, q->sz);
> > }
> > }
> > - mbuf = (u64 *)msg->msg;
> > - for (i = 1; i <= msg->hdr.sizew; i++)
> > - *mbuf++ = readq(qidx + (i * 8));
> >
> > return 0;
> > }
> >
> > -int octep_ctrl_mbox_recv(struct octep_ctrl_mbox *mbox, struct
> > octep_ctrl_mbox_msg *msg)
> > +int octep_ctrl_mbox_recv(struct octep_ctrl_mbox *mbox,
> > + struct octep_ctrl_mbox_msg *msgs,
> > + int num)
> > {
> > + struct octep_ctrl_mbox_msg_buf *sg;
> > + struct octep_ctrl_mbox_msg *msg;
> > struct octep_ctrl_mbox_q *q;
> > - u32 count, pi, ci;
> > - u8 __iomem *qidx;
> > - u64 *mbuf;
> > - int i;
> > + u32 pi, ci, q_depth, r_sz, buf_sz, prev_ci;
> > + int s, m;
> >
> > - if (!mbox || !msg)
> > + if (!mbox || !msgs)
> > return -EINVAL;
> >
> > + if (readq(OCTEP_CTRL_MBOX_INFO_FW_STATUS(mbox->barmem))
> !=
> > + OCTEP_CTRL_MBOX_STATUS_READY)
> > + return -EIO;
> > +
> > + mutex_lock(&mbox->f2hq_lock);
> > q = &mbox->f2hq;
> > pi = readl(q->hw_prod);
> > ci = readl(q->hw_cons);
> > - count = octep_ctrl_mbox_circq_depth(pi, ci, q->mask);
> > - if (!count)
> > - return -EAGAIN;
> > -
> > - qidx = OCTEP_CTRL_MBOX_Q_OFFSET(q->hw_q, ci);
> > - mbuf = (u64 *)msg->msg;
> > -
> > - mutex_lock(&mbox->f2hq_lock);
> > + for (m = 0; m < num; m++) {
> > + q_depth = octep_ctrl_mbox_circq_depth(pi, ci, q->sz);
> > + if (q_depth < mbox_hdr_sz)
> > + break;
> >
> > - msg->hdr.word0 = readq(qidx);
> > - for (i = 1; i <= msg->hdr.sizew; i++)
> > - *mbuf++ = readq(qidx + (i * 8));
> > + msg = &msgs[m];
> > + if (!msg)
> > + break;
> >
> > - ci = octep_ctrl_mbox_circq_inc(ci, q->mask);
> > + prev_ci = ci;
> > + read_mbox_data(q, pi, &ci, (void *)&msg->hdr,
> mbox_hdr_sz);
> > + buf_sz = msg->hdr.s.sz;
> > + if (q_depth < (mbox_hdr_sz + buf_sz)) {
> > + ci = prev_ci;
> > + break;
> > + }
> > + for (s = 0; ((s < msg->sg_num) && (buf_sz > 0)); s++) {
> > + sg = &msg->sg_list[s];
> > + r_sz = (sg->sz <= buf_sz) ? sg->sz : buf_sz;
> > + read_mbox_data(q, pi, &ci, sg->msg, r_sz);
> > + buf_sz -= r_sz;
> > + }
> > + if (buf_sz) {
> > + /* we did not read entire message */
> > + ci = prev_ci;
> > + break;
> > + }
> > + }
> > writel(ci, q->hw_cons);
> > -
> > mutex_unlock(&mbox->f2hq_lock);
> >
> > - if (msg->hdr.flags != OCTEP_CTRL_MBOX_MSG_HDR_FLAG_REQ ||
> !mbox->process_req)
> > - return 0;
> > -
> > - mbox->process_req(mbox->user_ctx, msg);
> > - mbuf = (u64 *)msg->msg;
> > - for (i = 1; i <= msg->hdr.sizew; i++)
> > - writeq(*mbuf++, (qidx + (i * 8)));
> > -
> > - writeq(msg->hdr.word0, qidx);
> > -
> > - return 0;
> > + return (m) ? m : -EAGAIN;
>
> again remove brackets
>

Ack

> > }
> >
> > int octep_ctrl_mbox_uninit(struct octep_ctrl_mbox *mbox) {
> > if (!mbox)
> > return -EINVAL;
> > + if (!mbox->barmem)
> > + return -EINVAL;
> >
> > - writeq(OCTEP_CTRL_MBOX_STATUS_UNINIT,
> > - OCTEP_CTRL_MBOX_INFO_HOST_STATUS_OFFSET(mbox-
> >barmem));
> > + writeq(OCTEP_CTRL_MBOX_STATUS_INVALID,
> > + OCTEP_CTRL_MBOX_INFO_HOST_STATUS(mbox->barmem));
> > /* ensure uninit state is written before uninitialization */
> > wmb();
> >
> > mutex_destroy(&mbox->h2fq_lock);
> > mutex_destroy(&mbox->f2hq_lock);
> >
> > - writeq(OCTEP_CTRL_MBOX_STATUS_INVALID,
> > - OCTEP_CTRL_MBOX_INFO_HOST_STATUS_OFFSET(mbox-
> >barmem));
> > -
> > pr_info("Octep ctrl mbox : Uninit successful.\n");
> >
> > return 0;
>
> (...)
>
> > {
> > - struct octep_ctrl_net_h2f_req req = {};
> > - struct octep_ctrl_net_h2f_resp *resp;
> > - struct octep_ctrl_mbox_msg msg = {};
> > - int err;
> > + msg->hdr.s.flags = OCTEP_CTRL_MBOX_MSG_HDR_FLAG_REQ;
> > + msg->hdr.s.msg_id = atomic_inc_return(&ctrl_net_msg_id) &
> > + GENMASK(sizeof(msg->hdr.s.msg_id) *
> BITS_PER_BYTE, 0);
> > + msg->hdr.s.sz = req_hdr_sz + sz;
> > + msg->sg_num = 1;
> > + msg->sg_list[0].msg = buf;
> > + msg->sg_list[0].sz = msg->hdr.s.sz;
> > + if (vfid != OCTEP_CTRL_NET_INVALID_VFID) {
> > + msg->hdr.s.is_vf = 1;
> > + msg->hdr.s.vf_idx = vfid;
> > + }
> > +}
> >
> > - req.hdr.cmd = OCTEP_CTRL_NET_H2F_CMD_LINK_STATUS;
> > - req.link.cmd = OCTEP_CTRL_NET_CMD_GET;
> > +static int send_mbox_req(struct octep_device *oct,
>
> why it's not prefixed with octep_ ?
>

we should have had octep_ prefix. Will add in next revision.

> > + struct octep_ctrl_net_wait_data *d,
> > + bool wait_for_response)
> > +{
> > + int err, ret;
> >
> > - msg.hdr.flags = OCTEP_CTRL_MBOX_MSG_HDR_FLAG_REQ;
> > - msg.hdr.sizew = OCTEP_CTRL_NET_H2F_STATE_REQ_SZW;
> > - msg.msg = &req;
> > - err = octep_ctrl_mbox_send(&oct->ctrl_mbox, &msg);
> > - if (err)
> > + err = octep_ctrl_mbox_send(&oct->ctrl_mbox, &d->msg, 1);
> > + if (err < 0)
> > return err;
> >
> > - resp = (struct octep_ctrl_net_h2f_resp *)&req;
> > - return resp->link.state;
> > + if (!wait_for_response)
> > + return 0;
> > +
> > + d->done = 0;
> > + INIT_LIST_HEAD(&d->list);
> > + list_add_tail(&d->list, &oct->ctrl_req_wait_list);
> > + ret = wait_event_interruptible_timeout(oct->ctrl_req_wait_q,
> > + (d->done != 0),
> > + jiffies + msecs_to_jiffies(500));
> > + list_del(&d->list);
> > + if (ret == 0 || ret == 1)
> > + return -EAGAIN;
> > +
> > + /**
> > + * (ret == 0) cond = false && timeout, return 0
> > + * (ret < 0) interrupted by signal, return 0
> > + * (ret == 1) cond = true && timeout, return 1
> > + * (ret >= 1) cond = true && !timeout, return 1
> > + */
> > +
> > + if (d->data.resp.hdr.s.reply != OCTEP_CTRL_NET_REPLY_OK)
> > + return -EAGAIN;
> > +
> > + return 0;
> > }
> >
> > -void octep_set_link_status(struct octep_device *oct, bool up)
> > +int octep_ctrl_net_init(struct octep_device *oct)
> > {
> > - struct octep_ctrl_net_h2f_req req = {};
> > - struct octep_ctrl_mbox_msg msg = {};
> > + struct pci_dev *pdev = oct->pdev;
> > + struct octep_ctrl_mbox *ctrl_mbox;
> > + int ret;
> > +
> > + init_waitqueue_head(&oct->ctrl_req_wait_q);
> > + INIT_LIST_HEAD(&oct->ctrl_req_wait_list);
> > +
> > + /* Initialize control mbox */
> > + ctrl_mbox = &oct->ctrl_mbox;
> > + ctrl_mbox->barmem = CFG_GET_CTRL_MBOX_MEM_ADDR(oct-
> >conf);
> > + ret = octep_ctrl_mbox_init(ctrl_mbox);
> > + if (ret) {
> > + dev_err(&pdev->dev, "Failed to initialize control mbox\n");
> > + return ret;
> > + }
> > + oct->ctrl_mbox_ifstats_offset = ctrl_mbox->barmem_sz;
> > +
> > + return 0;
> > +}
> >
> > - req.hdr.cmd = OCTEP_CTRL_NET_H2F_CMD_LINK_STATUS;
> > - req.link.cmd = OCTEP_CTRL_NET_CMD_SET;
> > - req.link.state = (up) ? OCTEP_CTRL_NET_STATE_UP :
> OCTEP_CTRL_NET_STATE_DOWN;
> > +int octep_ctrl_net_get_link_status(struct octep_device *oct, int
> > +vfid) {
> > + struct octep_ctrl_net_wait_data d = {0};
> > + struct octep_ctrl_net_h2f_req *req = &d.data.req;
> > + int err;
> >
> > - msg.hdr.flags = OCTEP_CTRL_MBOX_MSG_HDR_FLAG_REQ;
> > - msg.hdr.sizew = OCTEP_CTRL_NET_H2F_STATE_REQ_SZW;
> > - msg.msg = &req;
> > - octep_ctrl_mbox_send(&oct->ctrl_mbox, &msg);
> > + init_send_req(&d.msg, (void *)req, state_sz, vfid);
> > + req->hdr.s.cmd = OCTEP_CTRL_NET_H2F_CMD_LINK_STATUS;
> > + req->link.cmd = OCTEP_CTRL_NET_CMD_GET;
> > + err = send_mbox_req(oct, &d, true);
> > + if (err < 0)
> > + return err;
> > +
> > + return d.data.resp.link.state;
> > }
> >
> > -void octep_set_rx_state(struct octep_device *oct, bool up)
> > +int octep_ctrl_net_set_link_status(struct octep_device *oct, int vfid, bool
> up,
> > + bool wait_for_response)
> > {
> > - struct octep_ctrl_net_h2f_req req = {};
> > - struct octep_ctrl_mbox_msg msg = {};
> > + struct octep_ctrl_net_wait_data d = {0};
> > + struct octep_ctrl_net_h2f_req *req = &d.data.req;
> >
> > - req.hdr.cmd = OCTEP_CTRL_NET_H2F_CMD_RX_STATE;
> > - req.link.cmd = OCTEP_CTRL_NET_CMD_SET;
> > - req.link.state = (up) ? OCTEP_CTRL_NET_STATE_UP :
> OCTEP_CTRL_NET_STATE_DOWN;
> > + init_send_req(&d.msg, req, state_sz, vfid);
> > + req->hdr.s.cmd = OCTEP_CTRL_NET_H2F_CMD_LINK_STATUS;
> > + req->link.cmd = OCTEP_CTRL_NET_CMD_SET;
> > + req->link.state = (up) ? OCTEP_CTRL_NET_STATE_UP :
> > + OCTEP_CTRL_NET_STATE_DOWN;
> >
> > - msg.hdr.flags = OCTEP_CTRL_MBOX_MSG_HDR_FLAG_REQ;
> > - msg.hdr.sizew = OCTEP_CTRL_NET_H2F_STATE_REQ_SZW;
> > - msg.msg = &req;
> > - octep_ctrl_mbox_send(&oct->ctrl_mbox, &msg);
> > + return send_mbox_req(oct, &d, wait_for_response);
> > }
> >
> > -int octep_get_mac_addr(struct octep_device *oct, u8 *addr)
> > +int octep_ctrl_net_set_rx_state(struct octep_device *oct, int vfid, bool
> up,
> > + bool wait_for_response)
> > {
> > - struct octep_ctrl_net_h2f_req req = {};
> > - struct octep_ctrl_net_h2f_resp *resp;
> > - struct octep_ctrl_mbox_msg msg = {};
> > - int err;
> > + struct octep_ctrl_net_wait_data d = {0};
> > + struct octep_ctrl_net_h2f_req *req = &d.data.req;
> > +
> > + init_send_req(&d.msg, req, state_sz, vfid);
> > + req->hdr.s.cmd = OCTEP_CTRL_NET_H2F_CMD_RX_STATE;
> > + req->link.cmd = OCTEP_CTRL_NET_CMD_SET;
> > + req->link.state = (up) ? OCTEP_CTRL_NET_STATE_UP :
> > + OCTEP_CTRL_NET_STATE_DOWN;
> >
> > - req.hdr.cmd = OCTEP_CTRL_NET_H2F_CMD_MAC;
> > - req.link.cmd = OCTEP_CTRL_NET_CMD_GET;
> > + return send_mbox_req(oct, &d, wait_for_response); }
> > +
> > +int octep_ctrl_net_get_mac_addr(struct octep_device *oct, int vfid,
> > +u8 *addr) {
> > + struct octep_ctrl_net_wait_data d = {0};
> > + struct octep_ctrl_net_h2f_req *req = &d.data.req;
> > + int err;
> >
> > - msg.hdr.flags = OCTEP_CTRL_MBOX_MSG_HDR_FLAG_REQ;
> > - msg.hdr.sizew = OCTEP_CTRL_NET_H2F_MAC_REQ_SZW;
> > - msg.msg = &req;
> > - err = octep_ctrl_mbox_send(&oct->ctrl_mbox, &msg);
> > - if (err)
> > + init_send_req(&d.msg, req, mac_sz, vfid);
> > + req->hdr.s.cmd = OCTEP_CTRL_NET_H2F_CMD_MAC;
> > + req->link.cmd = OCTEP_CTRL_NET_CMD_GET;
> > + err = send_mbox_req(oct, &d, true);
> > + if (err < 0)
> > return err;
> >
> > - resp = (struct octep_ctrl_net_h2f_resp *)&req;
> > - memcpy(addr, resp->mac.addr, ETH_ALEN);
> > + memcpy(addr, d.data.resp.mac.addr, ETH_ALEN);
> >
> > - return err;
> > + return 0;
> > }
> >
> > -int octep_set_mac_addr(struct octep_device *oct, u8 *addr)
> > +int octep_ctrl_net_set_mac_addr(struct octep_device *oct, int vfid, u8
> *addr,
> > + bool wait_for_response)
> > {
> > - struct octep_ctrl_net_h2f_req req = {};
> > - struct octep_ctrl_mbox_msg msg = {};
> > + struct octep_ctrl_net_wait_data d = {0};
> > + struct octep_ctrl_net_h2f_req *req = &d.data.req;
> >
> > - req.hdr.cmd = OCTEP_CTRL_NET_H2F_CMD_MAC;
> > - req.mac.cmd = OCTEP_CTRL_NET_CMD_SET;
> > - memcpy(&req.mac.addr, addr, ETH_ALEN);
> > + init_send_req(&d.msg, req, mac_sz, vfid);
> > + req->hdr.s.cmd = OCTEP_CTRL_NET_H2F_CMD_MAC;
> > + req->mac.cmd = OCTEP_CTRL_NET_CMD_SET;
> > + memcpy(&req->mac.addr, addr, ETH_ALEN);
> >
> > - msg.hdr.flags = OCTEP_CTRL_MBOX_MSG_HDR_FLAG_REQ;
> > - msg.hdr.sizew = OCTEP_CTRL_NET_H2F_MAC_REQ_SZW;
> > - msg.msg = &req;
> > -
> > - return octep_ctrl_mbox_send(&oct->ctrl_mbox, &msg);
> > + return send_mbox_req(oct, &d, wait_for_response);
> > }
> >
> > -int octep_set_mtu(struct octep_device *oct, int mtu)
> > +int octep_ctrl_net_set_mtu(struct octep_device *oct, int vfid, int mtu,
> > + bool wait_for_response)
> > {
> > - struct octep_ctrl_net_h2f_req req = {};
> > - struct octep_ctrl_mbox_msg msg = {};
> > -
> > - req.hdr.cmd = OCTEP_CTRL_NET_H2F_CMD_MTU;
> > - req.mtu.cmd = OCTEP_CTRL_NET_CMD_SET;
> > - req.mtu.val = mtu;
> > + struct octep_ctrl_net_wait_data d = {0};
> > + struct octep_ctrl_net_h2f_req *req = &d.data.req;
> >
> > - msg.hdr.flags = OCTEP_CTRL_MBOX_MSG_HDR_FLAG_REQ;
> > - msg.hdr.sizew = OCTEP_CTRL_NET_H2F_MTU_REQ_SZW;
> > - msg.msg = &req;
> > + init_send_req(&d.msg, req, mtu_sz, vfid);
> > + req->hdr.s.cmd = OCTEP_CTRL_NET_H2F_CMD_MTU;
> > + req->mtu.cmd = OCTEP_CTRL_NET_CMD_SET;
> > + req->mtu.val = mtu;
> >
> > - return octep_ctrl_mbox_send(&oct->ctrl_mbox, &msg);
> > + return send_mbox_req(oct, &d, wait_for_response);
> > }
> >
> > -int octep_get_if_stats(struct octep_device *oct)
> > +int octep_ctrl_net_get_if_stats(struct octep_device *oct, int vfid)
> > {
> > void __iomem *iface_rx_stats;
> > void __iomem *iface_tx_stats;
> > - struct octep_ctrl_net_h2f_req req = {};
> > - struct octep_ctrl_mbox_msg msg = {};
> > + struct octep_ctrl_net_wait_data d = {0};
> > + struct octep_ctrl_net_h2f_req *req = &d.data.req;
> > int err;
> >
> > - req.hdr.cmd = OCTEP_CTRL_NET_H2F_CMD_GET_IF_STATS;
> > - req.mac.cmd = OCTEP_CTRL_NET_CMD_GET;
> > - req.get_stats.offset = oct->ctrl_mbox_ifstats_offset;
> > -
> > - msg.hdr.flags = OCTEP_CTRL_MBOX_MSG_HDR_FLAG_REQ;
> > - msg.hdr.sizew = OCTEP_CTRL_NET_H2F_GET_STATS_REQ_SZW;
> > - msg.msg = &req;
> > - err = octep_ctrl_mbox_send(&oct->ctrl_mbox, &msg);
> > - if (err)
> > + init_send_req(&d.msg, req, get_stats_sz, vfid);
> > + req->hdr.s.cmd = OCTEP_CTRL_NET_H2F_CMD_GET_IF_STATS;
> > + req->get_stats.offset = oct->ctrl_mbox_ifstats_offset;
> > + err = send_mbox_req(oct, &d, true);
> > + if (err < 0)
> > return err;
> >
> > iface_rx_stats = oct->ctrl_mbox.barmem +
> > oct->ctrl_mbox_ifstats_offset; @@ -144,51 +209,115 @@ int
> octep_get_if_stats(struct octep_device *oct)
> > memcpy_fromio(&oct->iface_rx_stats, iface_rx_stats, sizeof(struct
> octep_iface_rx_stats));
> > memcpy_fromio(&oct->iface_tx_stats, iface_tx_stats, sizeof(struct
> > octep_iface_tx_stats));
> >
> > - return err;
> > + return 0;
> > }
> >
> > -int octep_get_link_info(struct octep_device *oct)
> > +int octep_ctrl_net_get_link_info(struct octep_device *oct, int vfid)
> > {
> > - struct octep_ctrl_net_h2f_req req = {};
> > + struct octep_ctrl_net_wait_data d = {0};
> > + struct octep_ctrl_net_h2f_req *req = &d.data.req;
> > struct octep_ctrl_net_h2f_resp *resp;
> > - struct octep_ctrl_mbox_msg msg = {};
> > int err;
> >
> > - req.hdr.cmd = OCTEP_CTRL_NET_H2F_CMD_LINK_INFO;
> > - req.mac.cmd = OCTEP_CTRL_NET_CMD_GET;
> > -
> > - msg.hdr.flags = OCTEP_CTRL_MBOX_MSG_HDR_FLAG_REQ;
> > - msg.hdr.sizew = OCTEP_CTRL_NET_H2F_LINK_INFO_REQ_SZW;
> > - msg.msg = &req;
> > - err = octep_ctrl_mbox_send(&oct->ctrl_mbox, &msg);
> > - if (err)
> > + init_send_req(&d.msg, req, link_info_sz, vfid);
> > + req->hdr.s.cmd = OCTEP_CTRL_NET_H2F_CMD_LINK_INFO;
> > + req->link_info.cmd = OCTEP_CTRL_NET_CMD_GET;
> > + err = send_mbox_req(oct, &d, true);
> > + if (err < 0)
> > return err;
> >
> > - resp = (struct octep_ctrl_net_h2f_resp *)&req;
> > + resp = &d.data.resp;
> > oct->link_info.supported_modes = resp-
> >link_info.supported_modes;
> > oct->link_info.advertised_modes = resp-
> >link_info.advertised_modes;
> > oct->link_info.autoneg = resp->link_info.autoneg;
> > oct->link_info.pause = resp->link_info.pause;
> > oct->link_info.speed = resp->link_info.speed;
> >
> > - return err;
> > + return 0;
> > }
> >
> > -int octep_set_link_info(struct octep_device *oct, struct
> > octep_iface_link_info *link_info)
> > +int octep_ctrl_net_set_link_info(struct octep_device *oct, int vfid,
> > + struct octep_iface_link_info *link_info,
> > + bool wait_for_response)
> > {
> > - struct octep_ctrl_net_h2f_req req = {};
> > - struct octep_ctrl_mbox_msg msg = {};
> > + struct octep_ctrl_net_wait_data d = {0};
> > + struct octep_ctrl_net_h2f_req *req = &d.data.req;
> > +
> > + init_send_req(&d.msg, req, link_info_sz, vfid);
> > + req->hdr.s.cmd = OCTEP_CTRL_NET_H2F_CMD_LINK_INFO;
> > + req->link_info.cmd = OCTEP_CTRL_NET_CMD_SET;
> > + req->link_info.info.advertised_modes = link_info-
> >advertised_modes;
> > + req->link_info.info.autoneg = link_info->autoneg;
> > + req->link_info.info.pause = link_info->pause;
> > + req->link_info.info.speed = link_info->speed;
> > +
> > + return send_mbox_req(oct, &d, wait_for_response); }
> > +
> > +static int process_mbox_req(struct octep_device *oct,
> > + struct octep_ctrl_mbox_msg *msg) {
> > + return 0;
>
> ? if it's going to be filled on later patch, add it there.
>

Sure, will remove it in next revision.

> > +}
> > +
> > +static int process_mbox_resp(struct octep_device *oct,
>
> s/int/void
>
> > + struct octep_ctrl_mbox_msg *msg) {
> > + struct octep_ctrl_net_wait_data *pos, *n;
> > +
> > + list_for_each_entry_safe(pos, n, &oct->ctrl_req_wait_list, list) {
> > + if (pos->msg.hdr.s.msg_id == msg->hdr.s.msg_id) {
> > + memcpy(&pos->data.resp,
> > + msg->sg_list[0].msg,
> > + msg->hdr.s.sz);
> > + pos->done = 1;
> > + wake_up_interruptible_all(&oct->ctrl_req_wait_q);
> > + break;
> > + }
> > + }
> > +
> > + return 0;
> > +}
> > +
> > +int octep_ctrl_net_recv_fw_messages(struct octep_device *oct)
>
> s/int/void
>

will update in the next revision

> > +{
> > + static u16 msg_sz = sizeof(union octep_ctrl_net_max_data);
> > + union octep_ctrl_net_max_data data = {0};
> > + struct octep_ctrl_mbox_msg msg = {0};
> > + int ret;
> > +
> > + msg.hdr.s.sz = msg_sz;
> > + msg.sg_num = 1;
> > + msg.sg_list[0].sz = msg_sz;
> > + msg.sg_list[0].msg = &data;
> > + while (true) {
> > + /* mbox will overwrite msg.hdr.s.sz so initialize it */
> > + msg.hdr.s.sz = msg_sz;
> > + ret = octep_ctrl_mbox_recv(&oct->ctrl_mbox,
> > + (struct octep_ctrl_mbox_msg
> *)&msg,
> > + 1);
> > + if (ret <= 0)
> > + break;
>
> wouldn't it be better to return error and handle this accordingly on callsite?
>
> > +
> > + if (msg.hdr.s.flags &
> OCTEP_CTRL_MBOX_MSG_HDR_FLAG_REQ)
> > + process_mbox_req(oct, &msg);
> > + else if (msg.hdr.s.flags &
> OCTEP_CTRL_MBOX_MSG_HDR_FLAG_RESP)
> > + process_mbox_resp(oct, &msg);
> > + }
> > +
> > + return 0;
> > +}
> > +
>
> (...)
>
> > static const char *octep_devid_to_str(struct octep_device *oct) @@
> > -956,7 +935,6 @@ static const char *octep_devid_to_str(struct
> octep_device *oct)
> > */
> > int octep_device_setup(struct octep_device *oct) {
> > - struct octep_ctrl_mbox *ctrl_mbox;
> > struct pci_dev *pdev = oct->pdev;
> > int i, ret;
> >
> > @@ -993,18 +971,9 @@ int octep_device_setup(struct octep_device *oct)
> >
> > oct->pkind = CFG_GET_IQ_PKIND(oct->conf);
> >
> > - /* Initialize control mbox */
> > - ctrl_mbox = &oct->ctrl_mbox;
> > - ctrl_mbox->barmem = CFG_GET_CTRL_MBOX_MEM_ADDR(oct-
> >conf);
> > - ret = octep_ctrl_mbox_init(ctrl_mbox);
> > - if (ret) {
> > - dev_err(&pdev->dev, "Failed to initialize control mbox\n");
> > - goto unsupported_dev;
> > - }
> > - oct->ctrl_mbox_ifstats_offset = OCTEP_CTRL_MBOX_SZ(ctrl_mbox-
> >h2fq.elem_sz,
> > - ctrl_mbox-
> >h2fq.elem_cnt,
> > - ctrl_mbox-
> >f2hq.elem_sz,
> > - ctrl_mbox-
> >f2hq.elem_cnt);
> > + ret = octep_ctrl_net_init(oct);
> > + if (ret)
> > + return ret;
>
> if it's the end of func then you could just
>
> return octep_ctrl_net_init(oct);
>

Agree; will fix in next revision.
Thank you for the kind review comments and suggestions.

> >
> > return 0;
> >
> > @@ -1034,7 +1003,7 @@ static void octep_device_cleanup(struct
> octep_device *oct)
> > oct->mbox[i] = NULL;
> > }
> >
> > - octep_ctrl_mbox_uninit(&oct->ctrl_mbox);
> > + octep_ctrl_net_uninit(oct);
> >
> > oct->hw_ops.soft_reset(oct);
> > for (i = 0; i < OCTEP_MMIO_REGIONS; i++) { @@ -1145,7 +1114,8 @@
> > static int octep_probe(struct pci_dev *pdev, const struct pci_device_id
> *ent)
> > netdev->max_mtu = OCTEP_MAX_MTU;
> > netdev->mtu = OCTEP_DEFAULT_MTU;
> >
> > - err = octep_get_mac_addr(octep_dev, octep_dev->mac_addr);
> > + err = octep_ctrl_net_get_mac_addr(octep_dev,
> OCTEP_CTRL_NET_INVALID_VFID,
> > + octep_dev->mac_addr);
> > if (err) {
> > dev_err(&pdev->dev, "Failed to get mac address\n");
> > goto register_dev_err;
> > --
> > 2.36.0
> >

2023-03-22 07:34:29

by Veerasenareddy Burru

[permalink] [raw]

Subject: RE: [EXT] Re: [PATCH net-next v3 5/7] octeon_ep: support asynchronous notifications

> -----Original Message-----
> From: Maciej Fijalkowski <[email protected]>
> Sent: Wednesday, February 15, 2023 8:36 AM
> To: Veerasenareddy Burru <[email protected]>
> Cc: [email protected]; [email protected]; Abhijit Ayarekar
> <[email protected]>; Sathesh B Edara <[email protected]>;
> Satananda Burla <[email protected]>; [email protected]; David S.
> Miller <[email protected]>; Eric Dumazet <[email protected]>;
> Jakub Kicinski <[email protected]>; Paolo Abeni <[email protected]>
> Subject: [EXT] Re: [PATCH net-next v3 5/7] octeon_ep: support
> asynchronous notifications
>
> External Email
>
> ----------------------------------------------------------------------
> On Mon, Feb 13, 2023 at 09:14:20PM -0800, Veerasenareddy Burru wrote:
> > Add asynchronous notification support to the control mailbox.
> >
> > Signed-off-by: Veerasenareddy Burru <[email protected]>
> > Signed-off-by: Abhijit Ayarekar <[email protected]>
> > ---
> > v2 -> v3:
> > * no change
> >
> > v1 -> v2:
> > * no change
> >
> > .../marvell/octeon_ep/octep_ctrl_net.c | 29 +++++++++++++++++++
> > 1 file changed, 29 insertions(+)
> >
> > diff --git a/drivers/net/ethernet/marvell/octeon_ep/octep_ctrl_net.c
> > b/drivers/net/ethernet/marvell/octeon_ep/octep_ctrl_net.c
> > index 715af1891d0d..80bcd6cd4732 100644
> > --- a/drivers/net/ethernet/marvell/octeon_ep/octep_ctrl_net.c
> > +++ b/drivers/net/ethernet/marvell/octeon_ep/octep_ctrl_net.c
> > @@ -279,6 +279,33 @@ static int process_mbox_resp(struct octep_device
> *oct,
> > return 0;
> > }
> >
> > +static int process_mbox_notify(struct octep_device *oct,
>
> void
>

Will change in next revision.

> > + struct octep_ctrl_mbox_msg *msg) {
> > + struct octep_ctrl_net_f2h_req *req;
> > + struct net_device *netdev = oct->netdev;
>
> RCT
>

Will fix in next revision. I missed some RCT violations in this patchset. Will take care for future submissions.
Thank you for kind review.

> > +
> > + req = (struct octep_ctrl_net_f2h_req *)msg->sg_list[0].msg;
> > + switch (req->hdr.s.cmd) {
> > + case OCTEP_CTRL_NET_F2H_CMD_LINK_STATUS:
> > + if (netif_running(netdev)) {
> > + if (req->link.state) {
> > + dev_info(&oct->pdev->dev,
> "netif_carrier_on\n");
> > + netif_carrier_on(netdev);
> > + } else {
> > + dev_info(&oct->pdev->dev,
> "netif_carrier_off\n");
> > + netif_carrier_off(netdev);
> > + }
> > + }
> > + break;
> > + default:
> > + pr_info("Unknown mbox req : %u\n", req->hdr.s.cmd);
> > + break;
> > + }
> > +
> > + return 0;
> > +}
> > +
> > int octep_ctrl_net_recv_fw_messages(struct octep_device *oct) {
> > static u16 msg_sz = sizeof(union octep_ctrl_net_max_data); @@ -
> 303,6
> > +330,8 @@ int octep_ctrl_net_recv_fw_messages(struct octep_device
> *oct)
> > process_mbox_req(oct, &msg);
> > else if (msg.hdr.s.flags &
> OCTEP_CTRL_MBOX_MSG_HDR_FLAG_RESP)
> > process_mbox_resp(oct, &msg);
> > + else if (msg.hdr.s.flags &
> OCTEP_CTRL_MBOX_MSG_HDR_FLAG_NOTIFY)
> > + process_mbox_notify(oct, &msg);
> > }
> >
> > return 0;
> > --
> > 2.36.0
> >