From 42eb59d3a80ff83b4cacb92dcc44b22da7d4969b Mon Sep 17 00:00:00 2001 From: Casey Leedom Date: Wed, 24 Nov 2010 12:23:57 +0000 Subject: [PATCH] cxgb4vf: fix setting unicast/multicast addresses ... We were truncating the number of unicast and multicast MAC addresses supported. Additionally, we were incorrectly computing the MAC Address hash (a "1 << N" where we needed a "1ULL << N"). Signed-off-by: Casey Leedom Signed-off-by: David S. Miller --- drivers/net/cxgb4vf/cxgb4vf_main.c | 73 ++++++++++++++--------- drivers/net/cxgb4vf/t4vf_hw.c | 94 +++++++++++++++++++----------- 2 files changed, 104 insertions(+), 63 deletions(-) diff --git a/drivers/net/cxgb4vf/cxgb4vf_main.c b/drivers/net/cxgb4vf/cxgb4vf_main.c index c3449bbc585a..d887a76cd39d 100644 --- a/drivers/net/cxgb4vf/cxgb4vf_main.c +++ b/drivers/net/cxgb4vf/cxgb4vf_main.c @@ -816,40 +816,48 @@ static struct net_device_stats *cxgb4vf_get_stats(struct net_device *dev) } /* - * Collect up to maxaddrs worth of a netdevice's unicast addresses into an - * array of addrss pointers and return the number collected. + * Collect up to maxaddrs worth of a netdevice's unicast addresses, starting + * at a specified offset within the list, into an array of addrss pointers and + * return the number collected. */ -static inline int collect_netdev_uc_list_addrs(const struct net_device *dev, - const u8 **addr, - unsigned int maxaddrs) +static inline unsigned int collect_netdev_uc_list_addrs(const struct net_device *dev, + const u8 **addr, + unsigned int offset, + unsigned int maxaddrs) { + unsigned int index = 0; unsigned int naddr = 0; const struct netdev_hw_addr *ha; - for_each_dev_addr(dev, ha) { - addr[naddr++] = ha->addr; - if (naddr >= maxaddrs) - break; - } + for_each_dev_addr(dev, ha) + if (index++ >= offset) { + addr[naddr++] = ha->addr; + if (naddr >= maxaddrs) + break; + } return naddr; } /* - * Collect up to maxaddrs worth of a netdevice's multicast addresses into an - * array of addrss pointers and return the number collected. + * Collect up to maxaddrs worth of a netdevice's multicast addresses, starting + * at a specified offset within the list, into an array of addrss pointers and + * return the number collected. */ -static inline int collect_netdev_mc_list_addrs(const struct net_device *dev, - const u8 **addr, - unsigned int maxaddrs) +static inline unsigned int collect_netdev_mc_list_addrs(const struct net_device *dev, + const u8 **addr, + unsigned int offset, + unsigned int maxaddrs) { + unsigned int index = 0; unsigned int naddr = 0; const struct netdev_hw_addr *ha; - netdev_for_each_mc_addr(ha, dev) { - addr[naddr++] = ha->addr; - if (naddr >= maxaddrs) - break; - } + netdev_for_each_mc_addr(ha, dev) + if (index++ >= offset) { + addr[naddr++] = ha->addr; + if (naddr >= maxaddrs) + break; + } return naddr; } @@ -862,16 +870,20 @@ static int set_addr_filters(const struct net_device *dev, bool sleep) u64 mhash = 0; u64 uhash = 0; bool free = true; - u16 filt_idx[7]; + unsigned int offset, naddr; const u8 *addr[7]; - int ret, naddr = 0; + int ret; const struct port_info *pi = netdev_priv(dev); /* first do the secondary unicast addresses */ - naddr = collect_netdev_uc_list_addrs(dev, addr, ARRAY_SIZE(addr)); - if (naddr > 0) { + for (offset = 0; ; offset += naddr) { + naddr = collect_netdev_uc_list_addrs(dev, addr, offset, + ARRAY_SIZE(addr)); + if (naddr == 0) + break; + ret = t4vf_alloc_mac_filt(pi->adapter, pi->viid, free, - naddr, addr, filt_idx, &uhash, sleep); + naddr, addr, NULL, &uhash, sleep); if (ret < 0) return ret; @@ -879,12 +891,17 @@ static int set_addr_filters(const struct net_device *dev, bool sleep) } /* next set up the multicast addresses */ - naddr = collect_netdev_mc_list_addrs(dev, addr, ARRAY_SIZE(addr)); - if (naddr > 0) { + for (offset = 0; ; offset += naddr) { + naddr = collect_netdev_mc_list_addrs(dev, addr, offset, + ARRAY_SIZE(addr)); + if (naddr == 0) + break; + ret = t4vf_alloc_mac_filt(pi->adapter, pi->viid, free, - naddr, addr, filt_idx, &mhash, sleep); + naddr, addr, NULL, &mhash, sleep); if (ret < 0) return ret; + free = false; } return t4vf_set_addr_hash(pi->adapter, pi->viid, uhash != 0, diff --git a/drivers/net/cxgb4vf/t4vf_hw.c b/drivers/net/cxgb4vf/t4vf_hw.c index e306c20dfaee..19520afe1a12 100644 --- a/drivers/net/cxgb4vf/t4vf_hw.c +++ b/drivers/net/cxgb4vf/t4vf_hw.c @@ -1014,48 +1014,72 @@ int t4vf_alloc_mac_filt(struct adapter *adapter, unsigned int viid, bool free, unsigned int naddr, const u8 **addr, u16 *idx, u64 *hash, bool sleep_ok) { - int i, ret; + int offset, ret = 0; + unsigned nfilters = 0; + unsigned int rem = naddr; struct fw_vi_mac_cmd cmd, rpl; - struct fw_vi_mac_exact *p; - size_t len16; - if (naddr > ARRAY_SIZE(cmd.u.exact)) + if (naddr > FW_CLS_TCAM_NUM_ENTRIES) return -EINVAL; - len16 = DIV_ROUND_UP(offsetof(struct fw_vi_mac_cmd, - u.exact[naddr]), 16); - memset(&cmd, 0, sizeof(cmd)); - cmd.op_to_viid = cpu_to_be32(FW_CMD_OP(FW_VI_MAC_CMD) | - FW_CMD_REQUEST | - FW_CMD_WRITE | - (free ? FW_CMD_EXEC : 0) | - FW_VI_MAC_CMD_VIID(viid)); - cmd.freemacs_to_len16 = cpu_to_be32(FW_VI_MAC_CMD_FREEMACS(free) | - FW_CMD_LEN16(len16)); + for (offset = 0; offset < naddr; /**/) { + unsigned int fw_naddr = (rem < ARRAY_SIZE(cmd.u.exact) + ? rem + : ARRAY_SIZE(cmd.u.exact)); + size_t len16 = DIV_ROUND_UP(offsetof(struct fw_vi_mac_cmd, + u.exact[fw_naddr]), 16); + struct fw_vi_mac_exact *p; + int i; - for (i = 0, p = cmd.u.exact; i < naddr; i++, p++) { - p->valid_to_idx = - cpu_to_be16(FW_VI_MAC_CMD_VALID | - FW_VI_MAC_CMD_IDX(FW_VI_MAC_ADD_MAC)); - memcpy(p->macaddr, addr[i], sizeof(p->macaddr)); - } + memset(&cmd, 0, sizeof(cmd)); + cmd.op_to_viid = cpu_to_be32(FW_CMD_OP(FW_VI_MAC_CMD) | + FW_CMD_REQUEST | + FW_CMD_WRITE | + (free ? FW_CMD_EXEC : 0) | + FW_VI_MAC_CMD_VIID(viid)); + cmd.freemacs_to_len16 = + cpu_to_be32(FW_VI_MAC_CMD_FREEMACS(free) | + FW_CMD_LEN16(len16)); + + for (i = 0, p = cmd.u.exact; i < fw_naddr; i++, p++) { + p->valid_to_idx = cpu_to_be16( + FW_VI_MAC_CMD_VALID | + FW_VI_MAC_CMD_IDX(FW_VI_MAC_ADD_MAC)); + memcpy(p->macaddr, addr[offset+i], sizeof(p->macaddr)); + } + + + ret = t4vf_wr_mbox_core(adapter, &cmd, sizeof(cmd), &rpl, + sleep_ok); + if (ret && ret != -ENOMEM) + break; - ret = t4vf_wr_mbox_core(adapter, &cmd, sizeof(cmd), &rpl, sleep_ok); - if (ret) - return ret; - - for (i = 0, p = rpl.u.exact; i < naddr; i++, p++) { - u16 index = FW_VI_MAC_CMD_IDX_GET(be16_to_cpu(p->valid_to_idx)); - - if (idx) - idx[i] = (index >= FW_CLS_TCAM_NUM_ENTRIES - ? 0xffff - : index); - if (index < FW_CLS_TCAM_NUM_ENTRIES) - ret++; - else if (hash) - *hash |= (1 << hash_mac_addr(addr[i])); + for (i = 0, p = rpl.u.exact; i < fw_naddr; i++, p++) { + u16 index = FW_VI_MAC_CMD_IDX_GET( + be16_to_cpu(p->valid_to_idx)); + + if (idx) + idx[offset+i] = + (index >= FW_CLS_TCAM_NUM_ENTRIES + ? 0xffff + : index); + if (index < FW_CLS_TCAM_NUM_ENTRIES) + nfilters++; + else if (hash) + *hash |= (1ULL << hash_mac_addr(addr[offset+i])); + } + + free = false; + offset += fw_naddr; + rem -= fw_naddr; } + + /* + * If there were no errors or we merely ran out of room in our MAC + * address arena, return the number of filters actually written. + */ + if (ret == 0 || ret == -ENOMEM) + ret = nfilters; return ret; } -- 2.39.2