diff options
Diffstat (limited to 'drivers/target/iscsi/cxgbit/cxgbit_cm.c')
-rw-r--r-- | drivers/target/iscsi/cxgbit/cxgbit_cm.c | 234 |
1 files changed, 35 insertions, 199 deletions
diff --git a/drivers/target/iscsi/cxgbit/cxgbit_cm.c b/drivers/target/iscsi/cxgbit/cxgbit_cm.c index 0ae0b13..2fb1bf1 100644 --- a/drivers/target/iscsi/cxgbit/cxgbit_cm.c +++ b/drivers/target/iscsi/cxgbit/cxgbit_cm.c @@ -24,6 +24,7 @@ #include <net/ip6_route.h> #include <net/addrconf.h> +#include <libcxgb_cm.h> #include "cxgbit.h" #include "clip_tbl.h" @@ -72,15 +73,6 @@ out: return wr_waitp->ret; } -/* Returns whether a CPL status conveys negative advice. - */ -static int cxgbit_is_neg_adv(unsigned int status) -{ - return status == CPL_ERR_RTX_NEG_ADVICE || - status == CPL_ERR_PERSIST_NEG_ADVICE || - status == CPL_ERR_KEEPALV_NEG_ADVICE; -} - static int cxgbit_np_hashfn(const struct cxgbit_np *cnp) { return ((unsigned long)cnp >> 10) & (NP_INFO_HASH_SIZE - 1); @@ -623,21 +615,14 @@ void cxgbit_free_np(struct iscsi_np *np) static void cxgbit_send_halfclose(struct cxgbit_sock *csk) { struct sk_buff *skb; - struct cpl_close_con_req *req; - unsigned int len = roundup(sizeof(struct cpl_close_con_req), 16); + u32 len = roundup(sizeof(struct cpl_close_con_req), 16); skb = alloc_skb(len, GFP_ATOMIC); if (!skb) return; - req = (struct cpl_close_con_req *)__skb_put(skb, len); - memset(req, 0, len); - - set_wr_txq(skb, CPL_PRIORITY_DATA, csk->txq_idx); - INIT_TP_WR(req, csk->tid); - OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_CLOSE_CON_REQ, - csk->tid)); - req->rsvd = 0; + cxgb_mk_close_con_req(skb, len, csk->tid, csk->txq_idx, + NULL, NULL); cxgbit_skcb_flags(skb) |= SKCBF_TX_FLAG_COMPL; __skb_queue_tail(&csk->txq, skb); @@ -662,9 +647,8 @@ static void cxgbit_abort_arp_failure(void *handle, struct sk_buff *skb) static int cxgbit_send_abort_req(struct cxgbit_sock *csk) { - struct cpl_abort_req *req; - unsigned int len = roundup(sizeof(*req), 16); struct sk_buff *skb; + u32 len = roundup(sizeof(struct cpl_abort_req), 16); pr_debug("%s: csk %p tid %u; state %d\n", __func__, csk, csk->tid, csk->com.state); @@ -675,15 +659,9 @@ static int cxgbit_send_abort_req(struct cxgbit_sock *csk) cxgbit_send_tx_flowc_wr(csk); skb = __skb_dequeue(&csk->skbq); - req = (struct cpl_abort_req *)__skb_put(skb, len); - memset(req, 0, len); + cxgb_mk_abort_req(skb, len, csk->tid, csk->txq_idx, + csk->com.cdev, cxgbit_abort_arp_failure); - set_wr_txq(skb, CPL_PRIORITY_DATA, csk->txq_idx); - t4_set_arp_err_handler(skb, csk->com.cdev, cxgbit_abort_arp_failure); - INIT_TP_WR(req, csk->tid); - OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_ABORT_REQ, - csk->tid)); - req->cmd = CPL_ABORT_SEND_RST; return cxgbit_l2t_send(csk->com.cdev, skb, csk->l2t); } @@ -789,109 +767,6 @@ void _cxgbit_free_csk(struct kref *kref) kfree(csk); } -static void -cxgbit_get_tuple_info(struct cpl_pass_accept_req *req, int *iptype, - __u8 *local_ip, __u8 *peer_ip, __be16 *local_port, - __be16 *peer_port) -{ - u32 eth_len = ETH_HDR_LEN_G(be32_to_cpu(req->hdr_len)); - u32 ip_len = IP_HDR_LEN_G(be32_to_cpu(req->hdr_len)); - struct iphdr *ip = (struct iphdr *)((u8 *)(req + 1) + eth_len); - struct ipv6hdr *ip6 = (struct ipv6hdr *)((u8 *)(req + 1) + eth_len); - struct tcphdr *tcp = (struct tcphdr *) - ((u8 *)(req + 1) + eth_len + ip_len); - - if (ip->version == 4) { - pr_debug("%s saddr 0x%x daddr 0x%x sport %u dport %u\n", - __func__, - ntohl(ip->saddr), ntohl(ip->daddr), - ntohs(tcp->source), - ntohs(tcp->dest)); - *iptype = 4; - memcpy(peer_ip, &ip->saddr, 4); - memcpy(local_ip, &ip->daddr, 4); - } else { - pr_debug("%s saddr %pI6 daddr %pI6 sport %u dport %u\n", - __func__, - ip6->saddr.s6_addr, ip6->daddr.s6_addr, - ntohs(tcp->source), - ntohs(tcp->dest)); - *iptype = 6; - memcpy(peer_ip, ip6->saddr.s6_addr, 16); - memcpy(local_ip, ip6->daddr.s6_addr, 16); - } - - *peer_port = tcp->source; - *local_port = tcp->dest; -} - -static int -cxgbit_our_interface(struct cxgbit_device *cdev, struct net_device *egress_dev) -{ - u8 i; - - egress_dev = cxgbit_get_real_dev(egress_dev); - for (i = 0; i < cdev->lldi.nports; i++) - if (cdev->lldi.ports[i] == egress_dev) - return 1; - return 0; -} - -static struct dst_entry * -cxgbit_find_route6(struct cxgbit_device *cdev, __u8 *local_ip, __u8 *peer_ip, - __be16 local_port, __be16 peer_port, u8 tos, - __u32 sin6_scope_id) -{ - struct dst_entry *dst = NULL; - - if (IS_ENABLED(CONFIG_IPV6)) { - struct flowi6 fl6; - - memset(&fl6, 0, sizeof(fl6)); - memcpy(&fl6.daddr, peer_ip, 16); - memcpy(&fl6.saddr, local_ip, 16); - if (ipv6_addr_type(&fl6.daddr) & IPV6_ADDR_LINKLOCAL) - fl6.flowi6_oif = sin6_scope_id; - dst = ip6_route_output(&init_net, NULL, &fl6); - if (!dst) - goto out; - if (!cxgbit_our_interface(cdev, ip6_dst_idev(dst)->dev) && - !(ip6_dst_idev(dst)->dev->flags & IFF_LOOPBACK)) { - dst_release(dst); - dst = NULL; - } - } -out: - return dst; -} - -static struct dst_entry * -cxgbit_find_route(struct cxgbit_device *cdev, __be32 local_ip, __be32 peer_ip, - __be16 local_port, __be16 peer_port, u8 tos) -{ - struct rtable *rt; - struct flowi4 fl4; - struct neighbour *n; - - rt = ip_route_output_ports(&init_net, &fl4, NULL, peer_ip, - local_ip, - peer_port, local_port, IPPROTO_TCP, - tos, 0); - if (IS_ERR(rt)) - return NULL; - n = dst_neigh_lookup(&rt->dst, &peer_ip); - if (!n) - return NULL; - if (!cxgbit_our_interface(cdev, n->dev) && - !(n->dev->flags & IFF_LOOPBACK)) { - neigh_release(n); - dst_release(&rt->dst); - return NULL; - } - neigh_release(n); - return &rt->dst; -} - static void cxgbit_set_tcp_window(struct cxgbit_sock *csk, struct port_info *pi) { unsigned int linkspeed; @@ -1072,21 +947,14 @@ int cxgbit_ofld_send(struct cxgbit_device *cdev, struct sk_buff *skb) static void cxgbit_release_tid(struct cxgbit_device *cdev, u32 tid) { - struct cpl_tid_release *req; - unsigned int len = roundup(sizeof(*req), 16); + u32 len = roundup(sizeof(struct cpl_tid_release), 16); struct sk_buff *skb; skb = alloc_skb(len, GFP_ATOMIC); if (!skb) return; - req = (struct cpl_tid_release *)__skb_put(skb, len); - memset(req, 0, len); - - INIT_TP_WR(req, tid); - OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID( - CPL_TID_RELEASE, tid)); - set_wr_txq(skb, CPL_PRIORITY_SETUP, 0); + cxgb_mk_tid_release(skb, len, tid, 0); cxgbit_ofld_send(cdev, skb); } @@ -1108,20 +976,6 @@ cxgbit_l2t_send(struct cxgbit_device *cdev, struct sk_buff *skb, return ret < 0 ? ret : 0; } -static void -cxgbit_best_mtu(const unsigned short *mtus, unsigned short mtu, - unsigned int *idx, int use_ts, int ipv6) -{ - unsigned short hdr_size = (ipv6 ? sizeof(struct ipv6hdr) : - sizeof(struct iphdr)) + - sizeof(struct tcphdr) + - (use_ts ? round_up(TCPOLEN_TIMESTAMP, - 4) : 0); - unsigned short data_size = mtu - hdr_size; - - cxgb4_best_aligned_mtu(mtus, hdr_size, data_size, 8, idx); -} - static void cxgbit_send_rx_credits(struct cxgbit_sock *csk, struct sk_buff *skb) { if (csk->com.state != CSK_STATE_ESTABLISHED) { @@ -1140,22 +994,18 @@ static void cxgbit_send_rx_credits(struct cxgbit_sock *csk, struct sk_buff *skb) int cxgbit_rx_data_ack(struct cxgbit_sock *csk) { struct sk_buff *skb; - struct cpl_rx_data_ack *req; - unsigned int len = roundup(sizeof(*req), 16); + u32 len = roundup(sizeof(struct cpl_rx_data_ack), 16); + u32 credit_dack; skb = alloc_skb(len, GFP_KERNEL); if (!skb) return -1; - req = (struct cpl_rx_data_ack *)__skb_put(skb, len); - memset(req, 0, len); + credit_dack = RX_DACK_CHANGE_F | RX_DACK_MODE_V(1) | + RX_CREDITS_V(csk->rx_credits); - set_wr_txq(skb, CPL_PRIORITY_ACK, csk->ctrlq_idx); - INIT_TP_WR(req, csk->tid); - OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_RX_DATA_ACK, - csk->tid)); - req->credit_dack = cpu_to_be32(RX_DACK_CHANGE_F | RX_DACK_MODE_V(1) | - RX_CREDITS_V(csk->rx_credits)); + cxgb_mk_rx_data_ack(skb, len, csk->tid, csk->ctrlq_idx, + credit_dack); csk->rx_credits = 0; @@ -1210,15 +1060,6 @@ out: return -ENOMEM; } -static u32 cxgbit_compute_wscale(u32 win) -{ - u32 wscale = 0; - - while (wscale < 14 && (65535 << wscale) < win) - wscale++; - return wscale; -} - static void cxgbit_pass_accept_rpl(struct cxgbit_sock *csk, struct cpl_pass_accept_req *req) { @@ -1246,10 +1087,10 @@ cxgbit_pass_accept_rpl(struct cxgbit_sock *csk, struct cpl_pass_accept_req *req) INIT_TP_WR(rpl5, csk->tid); OPCODE_TID(rpl5) = cpu_to_be32(MK_OPCODE_TID(CPL_PASS_ACCEPT_RPL, csk->tid)); - cxgbit_best_mtu(csk->com.cdev->lldi.mtus, csk->mtu, &mtu_idx, - req->tcpopt.tstamp, - (csk->com.remote_addr.ss_family == AF_INET) ? 0 : 1); - wscale = cxgbit_compute_wscale(csk->rcv_win); + cxgb_best_mtu(csk->com.cdev->lldi.mtus, csk->mtu, &mtu_idx, + req->tcpopt.tstamp, + (csk->com.remote_addr.ss_family == AF_INET) ? 0 : 1); + wscale = cxgb_compute_wscale(csk->rcv_win); /* * Specify the largest window that will fit in opt0. The * remainder will be specified in the rx_data_ack. @@ -1340,8 +1181,8 @@ cxgbit_pass_accept_req(struct cxgbit_device *cdev, struct sk_buff *skb) goto rel_skb; } - cxgbit_get_tuple_info(req, &iptype, local_ip, peer_ip, - &local_port, &peer_port); + cxgb_get_4tuple(req, cdev->lldi.adapter_type, &iptype, local_ip, + peer_ip, &local_port, &peer_port); /* Find output route */ if (iptype == 4) { @@ -1350,21 +1191,23 @@ cxgbit_pass_accept_req(struct cxgbit_device *cdev, struct sk_buff *skb) , __func__, cnp, tid, local_ip, peer_ip, ntohs(local_port), ntohs(peer_port), peer_mss); - dst = cxgbit_find_route(cdev, *(__be32 *)local_ip, - *(__be32 *)peer_ip, - local_port, peer_port, - PASS_OPEN_TOS_G(ntohl(req->tos_stid))); + dst = cxgb_find_route(&cdev->lldi, cxgbit_get_real_dev, + *(__be32 *)local_ip, + *(__be32 *)peer_ip, + local_port, peer_port, + PASS_OPEN_TOS_G(ntohl(req->tos_stid))); } else { pr_debug("%s parent sock %p tid %u laddr %pI6 raddr %pI6 " "lport %d rport %d peer_mss %d\n" , __func__, cnp, tid, local_ip, peer_ip, ntohs(local_port), ntohs(peer_port), peer_mss); - dst = cxgbit_find_route6(cdev, local_ip, peer_ip, - local_port, peer_port, - PASS_OPEN_TOS_G(ntohl(req->tos_stid)), - ((struct sockaddr_in6 *) - &cnp->com.local_addr)->sin6_scope_id); + dst = cxgb_find_route6(&cdev->lldi, cxgbit_get_real_dev, + local_ip, peer_ip, + local_port, peer_port, + PASS_OPEN_TOS_G(ntohl(req->tos_stid)), + ((struct sockaddr_in6 *) + &cnp->com.local_addr)->sin6_scope_id); } if (!dst) { pr_err("%s - failed to find dst entry!\n", @@ -1795,16 +1638,15 @@ static void cxgbit_abort_req_rss(struct cxgbit_sock *csk, struct sk_buff *skb) { struct cpl_abort_req_rss *hdr = cplhdr(skb); unsigned int tid = GET_TID(hdr); - struct cpl_abort_rpl *rpl; struct sk_buff *rpl_skb; bool release = false; bool wakeup_thread = false; - unsigned int len = roundup(sizeof(*rpl), 16); + u32 len = roundup(sizeof(struct cpl_abort_rpl), 16); pr_debug("%s: csk %p; tid %u; state %d\n", __func__, csk, tid, csk->com.state); - if (cxgbit_is_neg_adv(hdr->status)) { + if (cxgb_is_neg_adv(hdr->status)) { pr_err("%s: got neg advise %d on tid %u\n", __func__, hdr->status, tid); goto rel_skb; @@ -1839,14 +1681,8 @@ static void cxgbit_abort_req_rss(struct cxgbit_sock *csk, struct sk_buff *skb) cxgbit_send_tx_flowc_wr(csk); rpl_skb = __skb_dequeue(&csk->skbq); - set_wr_txq(skb, CPL_PRIORITY_DATA, csk->txq_idx); - - rpl = (struct cpl_abort_rpl *)__skb_put(rpl_skb, len); - memset(rpl, 0, len); - INIT_TP_WR(rpl, csk->tid); - OPCODE_TID(rpl) = cpu_to_be32(MK_OPCODE_TID(CPL_ABORT_RPL, tid)); - rpl->cmd = CPL_ABORT_NO_RST; + cxgb_mk_abort_rpl(rpl_skb, len, csk->tid, csk->txq_idx); cxgbit_ofld_send(csk->com.cdev, rpl_skb); if (wakeup_thread) { |