static int __lro_proc_skb(struct net_lro_mgr *lro_mgr, struct sk_buff *skb, struct vlan_group *vgrp, u16 vlan_tag, void *priv) { struct net_lro_desc *lro_desc; struct iphdr *iph; struct tcphdr *tcph; u64 flags; int vlan_hdr_len = 0; if (!lro_mgr->get_skb_header || lro_mgr->get_skb_header(skb, (void *)&iph, (void *)&tcph, &flags, priv)) goto out; if (!(flags & LRO_IPV4) || !(flags & LRO_TCP)) goto out; lro_desc = lro_get_desc(lro_mgr, lro_mgr->lro_arr, iph, tcph); if (!lro_desc) goto out; if ((skb->protocol == htons(ETH_P_8021Q)) && !(lro_mgr->features & LRO_F_EXTRACT_VLAN_ID)) vlan_hdr_len = VLAN_HLEN; if (!lro_desc->active) { /* start new lro session */ if (lro_tcp_ip_check(iph, tcph, skb->len - vlan_hdr_len, NULL)) goto out; skb->ip_summed = lro_mgr->ip_summed_aggr; lro_init_desc(lro_desc, skb, iph, tcph, vlan_tag, vgrp); LRO_INC_STATS(lro_mgr, aggregated); return 0; } if (lro_desc->tcp_next_seq != ntohl(tcph->seq)) goto out2; if (lro_tcp_ip_check(iph, tcph, skb->len, lro_desc)) goto out2; lro_add_packet(lro_desc, skb, iph, tcph); LRO_INC_STATS(lro_mgr, aggregated); if ((lro_desc->pkt_aggr_cnt >= lro_mgr->max_aggr) || lro_desc->parent->len > (0xFFFF - lro_mgr->dev->mtu)) lro_flush(lro_mgr, lro_desc); return 0; out2: /* send aggregated SKBs to stack */ lro_flush(lro_mgr, lro_desc); out: /* Original SKB has to be posted to stack */ skb->ip_summed = lro_mgr->ip_summed; return 1; }
static int __lro_proc_skb(struct net_lro_mgr *lro_mgr, struct sk_buff *skb, void *priv) { struct net_lro_desc *lro_desc; struct iphdr *iph; struct tcphdr *tcph; u64 flags; int vlan_hdr_len = 0; #if defined(CONFIG_MV_ETHERNET) && defined(CONFIG_ARCH_FEROCEON) /* Only BSP net driver has this request(No this call back but support LRO...) */ /* if (!lro_mgr->get_skb_header || lro_mgr->get_skb_header(skb, (void *)&iph, (void *)&tcph, &flags, priv)) goto out; */ if (!lro_mgr->get_skb_header) { skb_reset_network_header(skb); skb_set_transport_header(skb, ip_hdrlen(skb)); iph = ip_hdr(skb); tcph = tcp_hdr(skb); flags = LRO_IPV4 | LRO_TCP; } else if (lro_mgr->get_skb_header(skb, (void *)&iph, (void *)&tcph, &flags, priv)) goto out; #else if (!lro_mgr->get_skb_header || lro_mgr->get_skb_header(skb, (void *)&iph, (void *)&tcph, &flags, priv)) goto out; #endif if (!(flags & LRO_IPV4) || !(flags & LRO_TCP)) goto out; lro_desc = lro_get_desc(lro_mgr, lro_mgr->lro_arr, iph, tcph); if (!lro_desc) goto out; if ((skb->protocol == htons(ETH_P_8021Q)) && !(lro_mgr->features & LRO_F_EXTRACT_VLAN_ID)) vlan_hdr_len = VLAN_HLEN; if (!lro_desc->active) { /* start new lro session */ if (lro_tcp_ip_check(iph, tcph, skb->len - vlan_hdr_len, NULL)) goto out; skb->ip_summed = lro_mgr->ip_summed_aggr; lro_init_desc(lro_desc, skb, iph, tcph); LRO_INC_STATS(lro_mgr, aggregated); return 0; } if (lro_desc->tcp_next_seq != ntohl(tcph->seq)) goto out2; if (lro_tcp_ip_check(iph, tcph, skb->len, lro_desc)) goto out2; lro_add_packet(lro_desc, skb, iph, tcph); LRO_INC_STATS(lro_mgr, aggregated); if ((lro_desc->pkt_aggr_cnt >= lro_mgr->max_aggr) || lro_desc->parent->len > (0xFFFF - lro_mgr->dev->mtu)) lro_flush(lro_mgr, lro_desc); return 0; out2: /* send aggregated SKBs to stack */ lro_flush(lro_mgr, lro_desc); out: return 1; }