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mac80211: brcmfmac: better logging of firmware api errors

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Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
This commit is contained in:
Rafał Miłecki 2018-03-01 18:45:10 +01:00
parent 9543fb1ecd
commit 9046e921af
2 changed files with 254 additions and 0 deletions
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68
package/kernel/mac80211/patches/321-v4.17-0001-brcmfmac-assure-bcdc-dcmd-api-does-not-return-value-.patch Normal file
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@ -0,0 +1,68 @@
From 5242a5444e0b6464d7455beb55d936dd192b5e9d Mon Sep 17 00:00:00 2001
From: Arend Van Spriel <arend.vanspriel@broadcom.com>
Date: Mon, 22 Jan 2018 21:46:39 +0100
Subject: [PATCH] brcmfmac: assure bcdc dcmd api does not return value > 0
The protocol layer api defines callbacks for dongle commands.
Although not really well documented these should only return an
error code in case of an error, or 0 upon success. In the bcdc
protocol it can return value above 0 and we carry a fix in the
caller of the protocol layer api. This patch makes it adhere to
the intent of the api as described above.
Reviewed-by: Hante Meuleman <hante.meuleman@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieter-paul.giesberts@broadcom.com>
Reviewed-by: Franky Lin <franky.lin@broadcom.com>
Signed-off-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
---
drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcdc.c | 6 +++++-
drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwil.c | 8 +++-----
2 files changed, 8 insertions(+), 6 deletions(-)
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcdc.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcdc.c
@@ -211,6 +211,8 @@ retry:
memcpy(buf, info, len);
}
+ ret = 0;
+
/* Check the ERROR flag */
if (flags & BCDC_DCMD_ERROR)
ret = le32_to_cpu(msg->status);
@@ -225,7 +227,7 @@ brcmf_proto_bcdc_set_dcmd(struct brcmf_p
{
struct brcmf_bcdc *bcdc = (struct brcmf_bcdc *)drvr->proto->pd;
struct brcmf_proto_bcdc_dcmd *msg = &bcdc->msg;
- int ret = 0;
+ int ret;
u32 flags, id;
brcmf_dbg(BCDC, "Enter, cmd %d len %d\n", cmd, len);
@@ -249,6 +251,8 @@ brcmf_proto_bcdc_set_dcmd(struct brcmf_p
goto done;
}
+ ret = 0;
+
/* Check the ERROR flag */
if (flags & BCDC_DCMD_ERROR)
ret = le32_to_cpu(msg->status);
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwil.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwil.c
@@ -121,11 +121,9 @@ brcmf_fil_cmd_data(struct brcmf_if *ifp,
else
err = brcmf_proto_query_dcmd(drvr, ifp->ifidx, cmd, data, len);
- if (err >= 0)
- return 0;
-
- brcmf_dbg(FIL, "Failed: %s (%d)\n",
- brcmf_fil_get_errstr((u32)(-err)), err);
+ if (err)
+ brcmf_dbg(FIL, "Failed: %s (%d)\n",
+ brcmf_fil_get_errstr((u32)(-err)), err);
return err;
}

186
package/kernel/mac80211/patches/321-v4.17-0002-brcmfmac-separate-firmware-errors-from-i-o-errors.patch Normal file
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@ -0,0 +1,186 @@
From b69c1df47281ad47bd2037a42b98f5c7115b7fd5 Mon Sep 17 00:00:00 2001
From: Arend Van Spriel <arend.vanspriel@broadcom.com>
Date: Mon, 22 Jan 2018 21:46:40 +0100
Subject: [PATCH] brcmfmac: separate firmware errors from i/o errors
When using the firmware api it can fail simply because firmware does
not like the request or it fails due to issues in the host interface.
Currently, there is only a single error code which is confusing. So
adding a parameter to pass the firmware error separately and in case
of a firmware error always return -EBADE to user-space.
Reviewed-by: Hante Meuleman <hante.meuleman@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieter-paul.giesberts@broadcom.com>
Reviewed-by: Franky Lin <franky.lin@broadcom.com>
Signed-off-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
---
drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcdc.c | 11 ++++++-----
drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwil.c | 16 +++++++++++-----
.../net/wireless/broadcom/brcm80211/brcmfmac/msgbuf.c | 10 ++++++----
drivers/net/wireless/broadcom/brcm80211/brcmfmac/proto.h | 14 ++++++++------
4 files changed, 31 insertions(+), 20 deletions(-)
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcdc.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcdc.c
@@ -165,7 +165,7 @@ static int brcmf_proto_bcdc_cmplt(struct
static int
brcmf_proto_bcdc_query_dcmd(struct brcmf_pub *drvr, int ifidx, uint cmd,
- void *buf, uint len)
+ void *buf, uint len, int *fwerr)
{
struct brcmf_bcdc *bcdc = (struct brcmf_bcdc *)drvr->proto->pd;
struct brcmf_proto_bcdc_dcmd *msg = &bcdc->msg;
@@ -175,6 +175,7 @@ brcmf_proto_bcdc_query_dcmd(struct brcmf
brcmf_dbg(BCDC, "Enter, cmd %d len %d\n", cmd, len);
+ *fwerr = 0;
ret = brcmf_proto_bcdc_msg(drvr, ifidx, cmd, buf, len, false);
if (ret < 0) {
brcmf_err("brcmf_proto_bcdc_msg failed w/status %d\n",
@@ -215,15 +216,14 @@ retry:
/* Check the ERROR flag */
if (flags & BCDC_DCMD_ERROR)
- ret = le32_to_cpu(msg->status);
-
+ *fwerr = le32_to_cpu(msg->status);
done:
return ret;
}
static int
brcmf_proto_bcdc_set_dcmd(struct brcmf_pub *drvr, int ifidx, uint cmd,
- void *buf, uint len)
+ void *buf, uint len, int *fwerr)
{
struct brcmf_bcdc *bcdc = (struct brcmf_bcdc *)drvr->proto->pd;
struct brcmf_proto_bcdc_dcmd *msg = &bcdc->msg;
@@ -232,6 +232,7 @@ brcmf_proto_bcdc_set_dcmd(struct brcmf_p
brcmf_dbg(BCDC, "Enter, cmd %d len %d\n", cmd, len);
+ *fwerr = 0;
ret = brcmf_proto_bcdc_msg(drvr, ifidx, cmd, buf, len, true);
if (ret < 0)
goto done;
@@ -255,7 +256,7 @@ brcmf_proto_bcdc_set_dcmd(struct brcmf_p
/* Check the ERROR flag */
if (flags & BCDC_DCMD_ERROR)
- ret = le32_to_cpu(msg->status);
+ *fwerr = le32_to_cpu(msg->status);
done:
return ret;
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwil.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwil.c
@@ -107,7 +107,7 @@ static s32
brcmf_fil_cmd_data(struct brcmf_if *ifp, u32 cmd, void *data, u32 len, bool set)
{
struct brcmf_pub *drvr = ifp->drvr;
- s32 err;
+ s32 err, fwerr;
if (drvr->bus_if->state != BRCMF_BUS_UP) {
brcmf_err("bus is down. we have nothing to do.\n");
@@ -117,14 +117,20 @@ brcmf_fil_cmd_data(struct brcmf_if *ifp,
if (data != NULL)
len = min_t(uint, len, BRCMF_DCMD_MAXLEN);
if (set)
- err = brcmf_proto_set_dcmd(drvr, ifp->ifidx, cmd, data, len);
+ err = brcmf_proto_set_dcmd(drvr, ifp->ifidx, cmd,
+ data, len, &fwerr);
else
- err = brcmf_proto_query_dcmd(drvr, ifp->ifidx, cmd, data, len);
+ err = brcmf_proto_query_dcmd(drvr, ifp->ifidx, cmd,
+ data, len, &fwerr);
- if (err)
+ if (err) {
brcmf_dbg(FIL, "Failed: %s (%d)\n",
brcmf_fil_get_errstr((u32)(-err)), err);
-
+ } else if (fwerr < 0) {
+ brcmf_dbg(FIL, "Firmware error: %s (%d)\n",
+ brcmf_fil_get_errstr((u32)(-fwerr)), fwerr);
+ err = -EBADE;
+ }
return err;
}
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/msgbuf.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/msgbuf.c
@@ -477,7 +477,7 @@ static void brcmf_msgbuf_ioctl_resp_wake
static int brcmf_msgbuf_query_dcmd(struct brcmf_pub *drvr, int ifidx,
- uint cmd, void *buf, uint len)
+ uint cmd, void *buf, uint len, int *fwerr)
{
struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
struct sk_buff *skb = NULL;
@@ -485,6 +485,7 @@ static int brcmf_msgbuf_query_dcmd(struc
int err;
brcmf_dbg(MSGBUF, "ifidx=%d, cmd=%d, len=%d\n", ifidx, cmd, len);
+ *fwerr = 0;
msgbuf->ctl_completed = false;
err = brcmf_msgbuf_tx_ioctl(drvr, ifidx, cmd, buf, len);
if (err)
@@ -508,14 +509,15 @@ static int brcmf_msgbuf_query_dcmd(struc
}
brcmu_pkt_buf_free_skb(skb);
- return msgbuf->ioctl_resp_status;
+ *fwerr = msgbuf->ioctl_resp_status;
+ return 0;
}
static int brcmf_msgbuf_set_dcmd(struct brcmf_pub *drvr, int ifidx,
- uint cmd, void *buf, uint len)
+ uint cmd, void *buf, uint len, int *fwerr)
{
- return brcmf_msgbuf_query_dcmd(drvr, ifidx, cmd, buf, len);
+ return brcmf_msgbuf_query_dcmd(drvr, ifidx, cmd, buf, len, fwerr);
}
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/proto.h
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/proto.h
@@ -30,9 +30,9 @@ struct brcmf_proto {
int (*hdrpull)(struct brcmf_pub *drvr, bool do_fws,
struct sk_buff *skb, struct brcmf_if **ifp);
int (*query_dcmd)(struct brcmf_pub *drvr, int ifidx, uint cmd,
- void *buf, uint len);
+ void *buf, uint len, int *fwerr);
int (*set_dcmd)(struct brcmf_pub *drvr, int ifidx, uint cmd, void *buf,
- uint len);
+ uint len, int *fwerr);
int (*tx_queue_data)(struct brcmf_pub *drvr, int ifidx,
struct sk_buff *skb);
int (*txdata)(struct brcmf_pub *drvr, int ifidx, u8 offset,
@@ -71,14 +71,16 @@ static inline int brcmf_proto_hdrpull(st
return drvr->proto->hdrpull(drvr, do_fws, skb, ifp);
}
static inline int brcmf_proto_query_dcmd(struct brcmf_pub *drvr, int ifidx,
- uint cmd, void *buf, uint len)
+ uint cmd, void *buf, uint len,
+ int *fwerr)
{
- return drvr->proto->query_dcmd(drvr, ifidx, cmd, buf, len);
+ return drvr->proto->query_dcmd(drvr, ifidx, cmd, buf, len,fwerr);
}
static inline int brcmf_proto_set_dcmd(struct brcmf_pub *drvr, int ifidx,
- uint cmd, void *buf, uint len)
+ uint cmd, void *buf, uint len,
+ int *fwerr)
{
- return drvr->proto->set_dcmd(drvr, ifidx, cmd, buf, len);
+ return drvr->proto->set_dcmd(drvr, ifidx, cmd, buf, len, fwerr);
}
static inline int brcmf_proto_tx_queue_data(struct brcmf_pub *drvr, int ifidx,