3.16.66-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Arend van Spriel <ar...@broadcom.com>
commit 75effb03ee8e4c9d4bbc909118ce5444b047dfde upstream.
In rx path the firmware provide an interface index which is used to
map to a struct brcmf_if instance. However, this involves some trick
that is done in two places. This is changed by having driver core
providing brcmf_get_ifp() function.
Reviewed-by: Hante Meuleman <meule...@broadcom.com>
Reviewed-by: Franky (Zhenhui) Lin <fran...@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <piete...@broadcom.com>
Signed-off-by: Arend van Spriel <ar...@broadcom.com>
Signed-off-by: Kalle Valo <kv...@codeaurora.org>
[bwh: Backported to 3.16:
- Drop changes to PCIe bus support
- Adjust filenames]
Signed-off-by: Ben Hutchings <b...@decadent.org.uk>
---
--- a/drivers/net/wireless/brcm80211/brcmfmac/bcdc.c
+++ b/drivers/net/wireless/brcm80211/brcmfmac/bcdc.c
@@ -276,6 +276,7 @@ brcmf_proto_bcdc_hdrpull(struct brcmf_pu
struct sk_buff *pktbuf)
{
struct brcmf_proto_bcdc_header *h;
+ struct brcmf_if *ifp;
brcmf_dbg(BCDC, "Enter\n");
@@ -289,30 +290,21 @@ brcmf_proto_bcdc_hdrpull(struct brcmf_pu
trace_brcmf_bcdchdr(pktbuf->data);
h = (struct brcmf_proto_bcdc_header *)(pktbuf->data);
- *ifidx = BCDC_GET_IF_IDX(h);
- if (*ifidx >= BRCMF_MAX_IFS) {
- brcmf_err("rx data ifnum out of range (%d)\n", *ifidx);
+ ifp = brcmf_get_ifp(drvr, BCDC_GET_IF_IDX(h));
+ if (IS_ERR_OR_NULL(ifp)) {
+ brcmf_dbg(INFO, "no matching ifp found\n");
return -EBADE;
}
- /* The ifidx is the idx to map to matching netdev/ifp. When receiving
- * events this is easy because it contains the bssidx which maps
- * 1-on-1 to the netdev/ifp. But for data frames the ifidx is rcvd.
- * bssidx 1 is used for p2p0 and no data can be received or
- * transmitted on it. Therefor bssidx is ifidx + 1 if ifidx > 0
- */
- if (*ifidx)
- (*ifidx)++;
-
if (((h->flags & BCDC_FLAG_VER_MASK) >> BCDC_FLAG_VER_SHIFT) !=
BCDC_PROTO_VER) {
brcmf_err("%s: non-BCDC packet received, flags 0x%x\n",
- brcmf_ifname(drvr, *ifidx), h->flags);
+ brcmf_ifname(drvr, ifp->ifidx), h->flags);
return -EBADE;
}
if (h->flags & BCDC_FLAG_SUM_GOOD) {
brcmf_dbg(BCDC, "%s: BDC rcv, good checksum, flags 0x%x\n",
- brcmf_ifname(drvr, *ifidx), h->flags);
+ brcmf_ifname(drvr, ifp->ifidx), h->flags);
pktbuf->ip_summed = CHECKSUM_UNNECESSARY;
}
@@ -320,12 +312,15 @@ brcmf_proto_bcdc_hdrpull(struct brcmf_pu
skb_pull(pktbuf, BCDC_HEADER_LEN);
if (do_fws)
- brcmf_fws_hdrpull(drvr, *ifidx, h->data_offset << 2, pktbuf);
+ brcmf_fws_hdrpull(drvr, ifp->ifidx, h->data_offset << 2,
+ pktbuf);
else
skb_pull(pktbuf, h->data_offset << 2);
if (pktbuf->len == 0)
return -ENODATA;
+
+ *ifidx = ifp->ifidx;
return 0;
}
--- a/drivers/net/wireless/brcm80211/brcmfmac/dhd_linux.c
+++ b/drivers/net/wireless/brcm80211/brcmfmac/dhd_linux.c
@@ -81,6 +81,25 @@ char *brcmf_ifname(struct brcmf_pub *drv
return "<if_none>";
}
+struct brcmf_if *brcmf_get_ifp(struct brcmf_pub *drvr, int ifidx)
+{
+ if (ifidx < 0 || ifidx >= BRCMF_MAX_IFS) {
+ brcmf_err("ifidx %d out of range\n", ifidx);
+ return ERR_PTR(-ERANGE);
+ }
+
+ /* The ifidx is the idx to map to matching netdev/ifp. When receiving
+ * events this is easy because it contains the bssidx which maps
+ * 1-on-1 to the netdev/ifp. But for data frames the ifidx is rcvd.
+ * bssidx 1 is used for p2p0 and no data can be received or
+ * transmitted on it. Therefor bssidx is ifidx + 1 if ifidx > 0
+ */
+ if (ifidx)
+ ifidx++;
+
+ return drvr->iflist[ifidx];
+}
+
static void _brcmf_set_multicast_list(struct work_struct *work)
{
struct brcmf_if *ifp;
--- a/drivers/net/wireless/brcm80211/brcmfmac/dhd.h
+++ b/drivers/net/wireless/brcm80211/brcmfmac/dhd.h
@@ -178,7 +178,7 @@ int brcmf_netdev_wait_pend8021x(struct n
/* Return pointer to interface name */
char *brcmf_ifname(struct brcmf_pub *drvr, int idx);
-
+struct brcmf_if *brcmf_get_ifp(struct brcmf_pub *drvr, int ifidx);
int brcmf_net_attach(struct brcmf_if *ifp, bool rtnl_locked);
struct brcmf_if *brcmf_add_if(struct brcmf_pub *drvr, s32 bssidx, s32 ifidx,
char *name, u8 *mac_addr);
