#include #include #include #include #include /* Calculate expected number of TX descriptors */ int tso_count_descs(struct sk_buff *skb) { /* The Marvell Way */ return skb_shinfo(skb)->gso_segs * 2 + skb_shinfo(skb)->nr_frags; } EXPORT_SYMBOL(tso_count_descs); void tso_build_hdr(struct sk_buff *skb, char *hdr, struct tso_t *tso, int size, bool is_last) { struct tcphdr *tcph; int hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); int mac_hdr_len = skb_network_offset(skb); memcpy(hdr, skb->data, hdr_len); if (!tso->ipv6) { struct iphdr *iph = (void *)(hdr + mac_hdr_len); iph->id = htons(tso->ip_id); iph->tot_len = htons(size + hdr_len - mac_hdr_len); tso->ip_id++; } else { struct ipv6hdr *iph = (void *)(hdr + mac_hdr_len); iph->payload_len = htons(size + tcp_hdrlen(skb)); } tcph = (struct tcphdr *)(hdr + skb_transport_offset(skb)); put_unaligned_be32(tso->tcp_seq, &tcph->seq); if (!is_last) { /* Clear all special flags for not last packet */ tcph->psh = 0; tcph->fin = 0; tcph->rst = 0; } } EXPORT_SYMBOL(tso_build_hdr); void tso_build_data(struct sk_buff *skb, struct tso_t *tso, int size) { tso->tcp_seq += size; tso->size -= size; tso->data += size; if ((tso->size == 0) && (tso->next_frag_idx < skb_shinfo(skb)->nr_frags)) { skb_frag_t *frag = &skb_shinfo(skb)->frags[tso->next_frag_idx]; /* Move to next segment */ tso->size = frag->size; tso->data = page_address(frag->page.p) + frag->page_offset; tso->next_frag_idx++; } } EXPORT_SYMBOL(tso_build_data); void tso_start(struct sk_buff *skb, struct tso_t *tso) { int hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); tso->ip_id = ntohs(ip_hdr(skb)->id); tso->tcp_seq = ntohl(tcp_hdr(skb)->seq); tso->next_frag_idx = 0; tso->ipv6 = vlan_get_protocol(skb) == htons(ETH_P_IPV6); /* Build first data */ tso->size = skb_headlen(skb) - hdr_len; tso->data = skb->data + hdr_len; if ((tso->size == 0) && (tso->next_frag_idx < skb_shinfo(skb)->nr_frags)) { skb_frag_t *frag = &skb_shinfo(skb)->frags[tso->next_frag_idx]; /* Move to next segment */ tso->size = frag->size; tso->data = page_address(frag->page.p) + frag->page_offset; tso->next_frag_idx++; } } EXPORT_SYMBOL(tso_start); orm'>
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authorMauro Carvalho Chehab <mchehab@s-opensource.com>2016-12-26 14:09:28 -0200
committerMauro Carvalho Chehab <mchehab@s-opensource.com>2016-12-26 14:09:28 -0200
commit0e0694ff1a7791274946b7f51bae692da0001a08 (patch)
tree53d28f58d793c151aa870f17d38ddec6ac01ec7a /net/ipv4/raw_diag.c
parent65390ea01ce678379da32b01f39fcfac4903f256 (diff)
parentc739c0a7c3c2472d7562b8f802cdce44d2597c8b (diff)
Merge branch 'patchwork' into v4l_for_linus
* patchwork: [media] s5k4ecgx: select CRC32 helper [media] dvb: avoid warning in dvb_net [media] v4l: tvp5150: Don't override output pinmuxing at stream on/off time [media] v4l: tvp5150: Fix comment regarding output pin muxing [media] v4l: tvp5150: Reset device at probe time, not in get/set format handlers [media] pctv452e: move buffer to heap, no mutex [media] media/cobalt: use pci_irq_allocate_vectors [media] cec: fix race between configuring and unconfiguring [media] cec: move cec_report_phys_addr into cec_config_thread_func [media] cec: replace cec_report_features by cec_fill_msg_report_features [media] cec: update log_addr[] before finishing configuration [media] cec: CEC_MSG_GIVE_FEATURES should abort for CEC version < 2 [media] cec: when canceling a message, don't overwrite old status info [media] cec: fix report_current_latency [media] smiapp: Make suspend and resume functions __maybe_unused [media] smiapp: Implement power-on and power-off sequences without runtime PM
Diffstat (limited to 'net/ipv4/raw_diag.c')