diff options
Diffstat (limited to 'package/kernel/mac80211/patches/365-0001-brcmfmac-consolidate-ifp-lookup-in-driver-core.patch')
| -rw-r--r-- | package/kernel/mac80211/patches/365-0001-brcmfmac-consolidate-ifp-lookup-in-driver-core.patch | 138 |
1 files changed, 138 insertions, 0 deletions
diff --git a/package/kernel/mac80211/patches/365-0001-brcmfmac-consolidate-ifp-lookup-in-driver-core.patch b/package/kernel/mac80211/patches/365-0001-brcmfmac-consolidate-ifp-lookup-in-driver-core.patch new file mode 100644 index 0000000000..97444b3c0d --- /dev/null +++ b/package/kernel/mac80211/patches/365-0001-brcmfmac-consolidate-ifp-lookup-in-driver-core.patch @@ -0,0 +1,138 @@ +From: Arend van Spriel <arend@broadcom.com> +Date: Wed, 26 Aug 2015 22:14:53 +0200 +Subject: [PATCH] brcmfmac: consolidate ifp lookup in driver core + +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 <meuleman@broadcom.com> +Reviewed-by: Franky (Zhenhui) Lin <frankyl@broadcom.com> +Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com> +Signed-off-by: Arend van Spriel <arend@broadcom.com> +--- + +--- 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/core.c ++++ b/drivers/net/wireless/brcm80211/brcmfmac/core.c +@@ -83,6 +83,25 @@ 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/core.h ++++ b/drivers/net/wireless/brcm80211/brcmfmac/core.h +@@ -202,7 +202,7 @@ int brcmf_netdev_wait_pend8021x(struct b + + /* 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); +--- a/drivers/net/wireless/brcm80211/brcmfmac/msgbuf.c ++++ b/drivers/net/wireless/brcm80211/brcmfmac/msgbuf.c +@@ -1081,16 +1081,8 @@ brcmf_msgbuf_rx_skb(struct brcmf_msgbuf + { + struct brcmf_if *ifp; + +- /* 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)++; +- ifp = msgbuf->drvr->iflist[ifidx]; +- if (!ifp || !ifp->ndev) { ++ ifp = brcmf_get_ifp(msgbuf->drvr, ifidx); ++ if (IS_ERR_OR_NULL(ifp) || !ifp->ndev) { + brcmf_err("Received pkt for invalid ifidx %d\n", ifidx); + brcmu_pkt_buf_free_skb(skb); + return; |