fragmentation.c (248e23b50e2da0753f3b5faa068939cbe9f8a75a) fragmentation.c (51c6b429c0c95e67edd1cb0b548c5cf6a6604763)
1/* Copyright (C) 2013-2016 B.A.T.M.A.N. contributors:
2 *
3 * Martin Hundebøll <martin@hundeboll.net>
4 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of version 2 of the GNU General Public
7 * License as published by the Free Software Foundation.
8 *

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496 if (skb->priority >= 256 && skb->priority <= 263)
497 frag_header.priority = skb->priority - 256;
498
499 ether_addr_copy(frag_header.orig, primary_if->net_dev->dev_addr);
500 ether_addr_copy(frag_header.dest, orig_node->orig);
501
502 /* Eat and send fragments from the tail of skb */
503 while (skb->len > max_fragment_size) {
1/* Copyright (C) 2013-2016 B.A.T.M.A.N. contributors:
2 *
3 * Martin Hundebøll <martin@hundeboll.net>
4 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of version 2 of the GNU General Public
7 * License as published by the Free Software Foundation.
8 *

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496 if (skb->priority >= 256 && skb->priority <= 263)
497 frag_header.priority = skb->priority - 256;
498
499 ether_addr_copy(frag_header.orig, primary_if->net_dev->dev_addr);
500 ether_addr_copy(frag_header.dest, orig_node->orig);
501
502 /* Eat and send fragments from the tail of skb */
503 while (skb->len > max_fragment_size) {
504 /* The initial check in this function should cover this case */
505 if (unlikely(frag_header.no == BATADV_FRAG_MAX_FRAGMENTS - 1)) {
506 ret = -EINVAL;
507 goto put_primary_if;
508 }
509
504 skb_fragment = batadv_frag_create(skb, &frag_header, mtu);
505 if (!skb_fragment) {
506 ret = -ENOMEM;
507 goto put_primary_if;
508 }
509
510 batadv_inc_counter(bat_priv, BATADV_CNT_FRAG_TX);
511 batadv_add_counter(bat_priv, BATADV_CNT_FRAG_TX_BYTES,
512 skb_fragment->len + ETH_HLEN);
513 ret = batadv_send_unicast_skb(skb_fragment, neigh_node);
514 if (ret != NET_XMIT_SUCCESS) {
515 ret = NET_XMIT_DROP;
516 goto put_primary_if;
517 }
518
519 frag_header.no++;
510 skb_fragment = batadv_frag_create(skb, &frag_header, mtu);
511 if (!skb_fragment) {
512 ret = -ENOMEM;
513 goto put_primary_if;
514 }
515
516 batadv_inc_counter(bat_priv, BATADV_CNT_FRAG_TX);
517 batadv_add_counter(bat_priv, BATADV_CNT_FRAG_TX_BYTES,
518 skb_fragment->len + ETH_HLEN);
519 ret = batadv_send_unicast_skb(skb_fragment, neigh_node);
520 if (ret != NET_XMIT_SUCCESS) {
521 ret = NET_XMIT_DROP;
522 goto put_primary_if;
523 }
524
525 frag_header.no++;
520
521 /* The initial check in this function should cover this case */
522 if (frag_header.no == BATADV_FRAG_MAX_FRAGMENTS - 1) {
523 ret = -EINVAL;
524 goto put_primary_if;
525 }
526 }
527
528 /* Make room for the fragment header. */
529 if (batadv_skb_head_push(skb, header_size) < 0 ||
530 pskb_expand_head(skb, header_size + ETH_HLEN, 0, GFP_ATOMIC) < 0) {
531 ret = -ENOMEM;
532 goto put_primary_if;
533 }

--- 18 unchanged lines hidden --- 		526 }
527
528 /* Make room for the fragment header. */
529 if (batadv_skb_head_push(skb, header_size) < 0 ||
530 pskb_expand_head(skb, header_size + ETH_HLEN, 0, GFP_ATOMIC) < 0) {
531 ret = -ENOMEM;
532 goto put_primary_if;
533 }

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