2016-05-27 08:54:37

by Arend van Spriel

[permalink] [raw]
Subject: [PATCH V6] brcmfmac: print errors if creating interface fails

From: Rafał Miłecki <[email protected]>

This is helpful for debugging. Without this all I was getting from "iw"
command on failed creating of P2P interface was:
> command failed: Too many open files in system (-23)

Signed-off-by: Rafal Milecki <[email protected]>
[[email protected]: reduce error prints upon iface creation]
Signed-off-by: Arend van Spriel <[email protected]>
---
V2: s/in/if/ in commit message
V3: Add one more error message as suggested by Arend
V4: Also update brcmf_cfg80211_add_iface & print error for AP
V5: remove error prints from p2p.c
V6: fix compiler warning and remove duplicate calls
---
.../net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c | 16 ++++++++++------
drivers/net/wireless/broadcom/brcm80211/brcmfmac/p2p.c | 2 --
2 files changed, 10 insertions(+), 8 deletions(-)

diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
index d0631b6..2248e8e 100644
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
@@ -669,20 +669,24 @@ static struct wireless_dev *brcmf_cfg80211_add_iface(struct wiphy *wiphy,
return ERR_PTR(-EOPNOTSUPP);
case NL80211_IFTYPE_AP:
wdev = brcmf_ap_add_vif(wiphy, name, flags, params);
- if (!IS_ERR(wdev))
- brcmf_cfg80211_update_proto_addr_mode(wdev);
- return wdev;
+ break;
case NL80211_IFTYPE_P2P_CLIENT:
case NL80211_IFTYPE_P2P_GO:
case NL80211_IFTYPE_P2P_DEVICE:
wdev = brcmf_p2p_add_vif(wiphy, name, name_assign_type, type, flags, params);
- if (!IS_ERR(wdev))
- brcmf_cfg80211_update_proto_addr_mode(wdev);
- return wdev;
+ break;
case NL80211_IFTYPE_UNSPECIFIED:
default:
return ERR_PTR(-EINVAL);
}
+
+ if (IS_ERR(wdev))
+ brcmf_err("add iface %s type %d failed: err=%d\n",
+ name, type, (int)PTR_ERR(wdev));
+ else
+ brcmf_cfg80211_update_proto_addr_mode(wdev);
+
+ return wdev;
}

static void brcmf_scan_config_mpc(struct brcmf_if *ifp, int mpc)
diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/p2p.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/p2p.c
index a70cda6..a812381 100644
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/p2p.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/p2p.c
@@ -2030,8 +2030,6 @@ static int brcmf_p2p_request_p2p_if(struct brcmf_p2p_info *p2p,

err = brcmf_fil_iovar_data_set(ifp, "p2p_ifadd", &if_request,
sizeof(if_request));
- if (err)
- return err;

return err;
}
--
1.9.1



2016-05-30 05:45:17

by Julian Calaby

[permalink] [raw]
Subject: Re: [PATCH V6] brcmfmac: print errors if creating interface fails

Hi All,

On Fri, May 27, 2016 at 6:54 PM, Arend van Spriel <[email protected]> wrote:
> From: Rafał Miłecki <[email protected]>
>
> This is helpful for debugging. Without this all I was getting from "iw"
> command on failed creating of P2P interface was:
>> command failed: Too many open files in system (-23)
>
> Signed-off-by: Rafal Milecki <[email protected]>
> [[email protected]: reduce error prints upon iface creation]
> Signed-off-by: Arend van Spriel <[email protected]>

FWIW, this is:

Reviewed-by: Julian Calaby <[email protected]>

Thanks,

Julian Calaby


> ---
> V2: s/in/if/ in commit message
> V3: Add one more error message as suggested by Arend
> V4: Also update brcmf_cfg80211_add_iface & print error for AP
> V5: remove error prints from p2p.c
> V6: fix compiler warning and remove duplicate calls
> ---
> .../net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c | 16 ++++++++++------
> drivers/net/wireless/broadcom/brcm80211/brcmfmac/p2p.c | 2 --
> 2 files changed, 10 insertions(+), 8 deletions(-)
>
> diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
> index d0631b6..2248e8e 100644
> --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
> +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
> @@ -669,20 +669,24 @@ static struct wireless_dev *brcmf_cfg80211_add_iface(struct wiphy *wiphy,
> return ERR_PTR(-EOPNOTSUPP);
> case NL80211_IFTYPE_AP:
> wdev = brcmf_ap_add_vif(wiphy, name, flags, params);
> - if (!IS_ERR(wdev))
> - brcmf_cfg80211_update_proto_addr_mode(wdev);
> - return wdev;
> + break;
> case NL80211_IFTYPE_P2P_CLIENT:
> case NL80211_IFTYPE_P2P_GO:
> case NL80211_IFTYPE_P2P_DEVICE:
> wdev = brcmf_p2p_add_vif(wiphy, name, name_assign_type, type, flags, params);
> - if (!IS_ERR(wdev))
> - brcmf_cfg80211_update_proto_addr_mode(wdev);
> - return wdev;
> + break;
> case NL80211_IFTYPE_UNSPECIFIED:
> default:
> return ERR_PTR(-EINVAL);
> }
> +
> + if (IS_ERR(wdev))
> + brcmf_err("add iface %s type %d failed: err=%d\n",
> + name, type, (int)PTR_ERR(wdev));
> + else
> + brcmf_cfg80211_update_proto_addr_mode(wdev);
> +
> + return wdev;
> }
>
> static void brcmf_scan_config_mpc(struct brcmf_if *ifp, int mpc)
> diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/p2p.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/p2p.c
> index a70cda6..a812381 100644
> --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/p2p.c
> +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/p2p.c
> @@ -2030,8 +2030,6 @@ static int brcmf_p2p_request_p2p_if(struct brcmf_p2p_info *p2p,
>
> err = brcmf_fil_iovar_data_set(ifp, "p2p_ifadd", &if_request,
> sizeof(if_request));
> - if (err)
> - return err;
>
> return err;
> }
> --
> 1.9.1
>
> --
> To unsubscribe from this list: send the line "unsubscribe linux-wireless" in
> the body of a message to [email protected]
> More majordomo info at http://vger.kernel.org/majordomo-info.html



--
Julian Calaby

Email: [email protected]
Profile: http://www.google.com/profiles/julian.calaby/

2016-06-16 15:03:56

by Kalle Valo

[permalink] [raw]
Subject: Re: [V6] brcmfmac: print errors if creating interface fails

Arend van Spriel <[email protected]> wrote:
> From: Rafał Miłecki <[email protected]>
>
> This is helpful for debugging. Without this all I was getting from "iw"
> command on failed creating of P2P interface was:
> > command failed: Too many open files in system (-23)
>
> Signed-off-by: Rafal Milecki <[email protected]>
> [[email protected]: reduce error prints upon iface creation]
> Signed-off-by: Arend van Spriel <[email protected]>
> Reviewed-by: Julian Calaby <[email protected]>

Thanks, 1 patch applied to wireless-drivers-next.git:

0cd33c204b98 brcmfmac: print errors if creating interface fails

--
Sent by pwcli
https://patchwork.kernel.org/patch/9137911/