Author | Tokens | Token Proportion | Commits | Commit Proportion |
---|---|---|---|---|
Moni Shoua | 1330 | 78.65% | 1 | 3.23% |
Bob Pearson | 197 | 11.65% | 18 | 58.06% |
Daisuke Matsuda | 56 | 3.31% | 1 | 3.23% |
Parav Pandit | 30 | 1.77% | 1 | 3.23% |
Zhu Yanjun | 26 | 1.54% | 3 | 9.68% |
Jason Gunthorpe | 22 | 1.30% | 1 | 3.23% |
Guoqing Jiang | 16 | 0.95% | 1 | 3.23% |
Yonatan Cohen | 7 | 0.41% | 1 | 3.23% |
Steve Wise | 2 | 0.12% | 1 | 3.23% |
Martin Wilck | 2 | 0.12% | 1 | 3.23% |
Yuval Shaia | 2 | 0.12% | 1 | 3.23% |
Kamal Heib | 1 | 0.06% | 1 | 3.23% |
Total | 1691 | 31 |
// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB /* * Copyright (c) 2016 Mellanox Technologies Ltd. All rights reserved. * Copyright (c) 2015 System Fabric Works, Inc. All rights reserved. */ #include <linux/skbuff.h> #include "rxe.h" #include "rxe_loc.h" /* check that QP matches packet opcode type and is in a valid state */ static int check_type_state(struct rxe_dev *rxe, struct rxe_pkt_info *pkt, struct rxe_qp *qp) { unsigned int pkt_type; unsigned long flags; if (unlikely(!qp->valid)) return -EINVAL; pkt_type = pkt->opcode & 0xe0; switch (qp_type(qp)) { case IB_QPT_RC: if (unlikely(pkt_type != IB_OPCODE_RC)) return -EINVAL; break; case IB_QPT_UC: if (unlikely(pkt_type != IB_OPCODE_UC)) return -EINVAL; break; case IB_QPT_UD: case IB_QPT_GSI: if (unlikely(pkt_type != IB_OPCODE_UD)) return -EINVAL; break; default: return -EINVAL; } spin_lock_irqsave(&qp->state_lock, flags); if (pkt->mask & RXE_REQ_MASK) { if (unlikely(qp_state(qp) < IB_QPS_RTR)) { spin_unlock_irqrestore(&qp->state_lock, flags); return -EINVAL; } } else { if (unlikely(qp_state(qp) < IB_QPS_RTS)) { spin_unlock_irqrestore(&qp->state_lock, flags); return -EINVAL; } } spin_unlock_irqrestore(&qp->state_lock, flags); return 0; } static void set_bad_pkey_cntr(struct rxe_port *port) { spin_lock_bh(&port->port_lock); port->attr.bad_pkey_cntr = min((u32)0xffff, port->attr.bad_pkey_cntr + 1); spin_unlock_bh(&port->port_lock); } static void set_qkey_viol_cntr(struct rxe_port *port) { spin_lock_bh(&port->port_lock); port->attr.qkey_viol_cntr = min((u32)0xffff, port->attr.qkey_viol_cntr + 1); spin_unlock_bh(&port->port_lock); } static int check_keys(struct rxe_dev *rxe, struct rxe_pkt_info *pkt, u32 qpn, struct rxe_qp *qp) { struct rxe_port *port = &rxe->port; u16 pkey = bth_pkey(pkt); pkt->pkey_index = 0; if (!pkey_match(pkey, IB_DEFAULT_PKEY_FULL)) { set_bad_pkey_cntr(port); return -EINVAL; } if (qp_type(qp) == IB_QPT_UD || qp_type(qp) == IB_QPT_GSI) { u32 qkey = (qpn == 1) ? GSI_QKEY : qp->attr.qkey; if (unlikely(deth_qkey(pkt) != qkey)) { set_qkey_viol_cntr(port); return -EINVAL; } } return 0; } static int check_addr(struct rxe_dev *rxe, struct rxe_pkt_info *pkt, struct rxe_qp *qp) { struct sk_buff *skb = PKT_TO_SKB(pkt); if (qp_type(qp) != IB_QPT_RC && qp_type(qp) != IB_QPT_UC) return 0; if (unlikely(pkt->port_num != qp->attr.port_num)) return -EINVAL; if (skb->protocol == htons(ETH_P_IP)) { struct in_addr *saddr = &qp->pri_av.sgid_addr._sockaddr_in.sin_addr; struct in_addr *daddr = &qp->pri_av.dgid_addr._sockaddr_in.sin_addr; if ((ip_hdr(skb)->daddr != saddr->s_addr) || (ip_hdr(skb)->saddr != daddr->s_addr)) return -EINVAL; } else if (skb->protocol == htons(ETH_P_IPV6)) { struct in6_addr *saddr = &qp->pri_av.sgid_addr._sockaddr_in6.sin6_addr; struct in6_addr *daddr = &qp->pri_av.dgid_addr._sockaddr_in6.sin6_addr; if (memcmp(&ipv6_hdr(skb)->daddr, saddr, sizeof(*saddr)) || memcmp(&ipv6_hdr(skb)->saddr, daddr, sizeof(*daddr))) return -EINVAL; } return 0; } static int hdr_check(struct rxe_pkt_info *pkt) { struct rxe_dev *rxe = pkt->rxe; struct rxe_port *port = &rxe->port; struct rxe_qp *qp = NULL; u32 qpn = bth_qpn(pkt); int index; int err; if (unlikely(bth_tver(pkt) != BTH_TVER)) goto err1; if (unlikely(qpn == 0)) goto err1; if (qpn != IB_MULTICAST_QPN) { index = (qpn == 1) ? port->qp_gsi_index : qpn; qp = rxe_pool_get_index(&rxe->qp_pool, index); if (unlikely(!qp)) goto err1; err = check_type_state(rxe, pkt, qp); if (unlikely(err)) goto err2; err = check_addr(rxe, pkt, qp); if (unlikely(err)) goto err2; err = check_keys(rxe, pkt, qpn, qp); if (unlikely(err)) goto err2; } else { if (unlikely((pkt->mask & RXE_GRH_MASK) == 0)) goto err1; } pkt->qp = qp; return 0; err2: rxe_put(qp); err1: return -EINVAL; } static inline void rxe_rcv_pkt(struct rxe_pkt_info *pkt, struct sk_buff *skb) { if (pkt->mask & RXE_REQ_MASK) rxe_resp_queue_pkt(pkt->qp, skb); else rxe_comp_queue_pkt(pkt->qp, skb); } static void rxe_rcv_mcast_pkt(struct rxe_dev *rxe, struct sk_buff *skb) { struct rxe_pkt_info *pkt = SKB_TO_PKT(skb); struct rxe_mcg *mcg; struct rxe_mca *mca; struct rxe_qp *qp; union ib_gid dgid; int err; if (skb->protocol == htons(ETH_P_IP)) ipv6_addr_set_v4mapped(ip_hdr(skb)->daddr, (struct in6_addr *)&dgid); else if (skb->protocol == htons(ETH_P_IPV6)) memcpy(&dgid, &ipv6_hdr(skb)->daddr, sizeof(dgid)); /* lookup mcast group corresponding to mgid, takes a ref */ mcg = rxe_lookup_mcg(rxe, &dgid); if (!mcg) goto drop; /* mcast group not registered */ spin_lock_bh(&rxe->mcg_lock); /* this is unreliable datagram service so we let * failures to deliver a multicast packet to a * single QP happen and just move on and try * the rest of them on the list */ list_for_each_entry(mca, &mcg->qp_list, qp_list) { qp = mca->qp; /* validate qp for incoming packet */ err = check_type_state(rxe, pkt, qp); if (err) continue; err = check_keys(rxe, pkt, bth_qpn(pkt), qp); if (err) continue; /* for all but the last QP create a new clone of the * skb and pass to the QP. Pass the original skb to * the last QP in the list. */ if (mca->qp_list.next != &mcg->qp_list) { struct sk_buff *cskb; struct rxe_pkt_info *cpkt; cskb = skb_clone(skb, GFP_ATOMIC); if (unlikely(!cskb)) continue; if (WARN_ON(!ib_device_try_get(&rxe->ib_dev))) { kfree_skb(cskb); break; } cpkt = SKB_TO_PKT(cskb); cpkt->qp = qp; rxe_get(qp); rxe_rcv_pkt(cpkt, cskb); } else { pkt->qp = qp; rxe_get(qp); rxe_rcv_pkt(pkt, skb); skb = NULL; /* mark consumed */ } } spin_unlock_bh(&rxe->mcg_lock); kref_put(&mcg->ref_cnt, rxe_cleanup_mcg); if (likely(!skb)) return; /* This only occurs if one of the checks fails on the last * QP in the list above */ drop: kfree_skb(skb); ib_device_put(&rxe->ib_dev); } /** * rxe_chk_dgid - validate destination IP address * @rxe: rxe device that received packet * @skb: the received packet buffer * * Accept any loopback packets * Extract IP address from packet and * Accept if multicast packet * Accept if matches an SGID table entry */ static int rxe_chk_dgid(struct rxe_dev *rxe, struct sk_buff *skb) { struct rxe_pkt_info *pkt = SKB_TO_PKT(skb); const struct ib_gid_attr *gid_attr; union ib_gid dgid; union ib_gid *pdgid; if (pkt->mask & RXE_LOOPBACK_MASK) return 0; if (skb->protocol == htons(ETH_P_IP)) { ipv6_addr_set_v4mapped(ip_hdr(skb)->daddr, (struct in6_addr *)&dgid); pdgid = &dgid; } else { pdgid = (union ib_gid *)&ipv6_hdr(skb)->daddr; } if (rdma_is_multicast_addr((struct in6_addr *)pdgid)) return 0; gid_attr = rdma_find_gid_by_port(&rxe->ib_dev, pdgid, IB_GID_TYPE_ROCE_UDP_ENCAP, 1, skb->dev); if (IS_ERR(gid_attr)) return PTR_ERR(gid_attr); rdma_put_gid_attr(gid_attr); return 0; } /* rxe_rcv is called from the interface driver */ void rxe_rcv(struct sk_buff *skb) { int err; struct rxe_pkt_info *pkt = SKB_TO_PKT(skb); struct rxe_dev *rxe = pkt->rxe; if (unlikely(skb->len < RXE_BTH_BYTES)) goto drop; if (rxe_chk_dgid(rxe, skb) < 0) goto drop; pkt->opcode = bth_opcode(pkt); pkt->psn = bth_psn(pkt); pkt->qp = NULL; pkt->mask |= rxe_opcode[pkt->opcode].mask; if (unlikely(skb->len < header_size(pkt))) goto drop; err = hdr_check(pkt); if (unlikely(err)) goto drop; err = rxe_icrc_check(skb, pkt); if (unlikely(err)) goto drop; rxe_counter_inc(rxe, RXE_CNT_RCVD_PKTS); if (unlikely(bth_qpn(pkt) == IB_MULTICAST_QPN)) rxe_rcv_mcast_pkt(rxe, skb); else rxe_rcv_pkt(pkt, skb); return; drop: if (pkt->qp) rxe_put(pkt->qp); kfree_skb(skb); ib_device_put(&rxe->ib_dev); }
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