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Release 4.8 net/mpls/mpls_gso.c

Directory: net/mpls
 *      MPLS GSO Support
 *      Authors: Simon Horman (
 *      This program is free software; you can redistribute it and/or
 *      modify it under the terms of the GNU General Public License
 *      as published by the Free Software Foundation; either version
 *      2 of the License, or (at your option) any later version.
 *      Based on: GSO portions of net/ipv4/gre.c

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

#include <linux/err.h>
#include <linux/module.h>
#include <linux/netdev_features.h>
#include <linux/netdevice.h>
#include <linux/skbuff.h>

static struct sk_buff *mpls_gso_segment(struct sk_buff *skb, netdev_features_t features) { struct sk_buff *segs = ERR_PTR(-EINVAL); netdev_features_t mpls_features; __be16 mpls_protocol; /* Setup inner SKB. */ mpls_protocol = skb->protocol; skb->protocol = skb->inner_protocol; /* Push back the mac header that skb_mac_gso_segment() has pulled. * It will be re-pulled by the call to skb_mac_gso_segment() below */ __skb_push(skb, skb->mac_len); /* Segment inner packet. */ mpls_features = skb->dev->mpls_features & features; segs = skb_mac_gso_segment(skb, mpls_features); /* Restore outer protocol. */ skb->protocol = mpls_protocol; /* Re-pull the mac header that the call to skb_mac_gso_segment() * above pulled. It will be re-pushed after returning * skb_mac_gso_segment(), an indirect caller of this function. */ __skb_pull(skb, skb->data - skb_mac_header(skb)); return segs; }


simon hormansimon horman10198.06%133.33%
pravin b shelarpravin b shelar10.97%133.33%
florian westphalflorian westphal10.97%133.33%

static struct packet_offload mpls_mc_offload __read_mostly = { .type = cpu_to_be16(ETH_P_MPLS_MC), .priority = 15, .callbacks = { .gso_segment = mpls_gso_segment, }, }; static struct packet_offload mpls_uc_offload __read_mostly = { .type = cpu_to_be16(ETH_P_MPLS_UC), .priority = 15, .callbacks = { .gso_segment = mpls_gso_segment, }, };
static int __init mpls_gso_init(void) { pr_info("MPLS GSO support\n"); dev_add_offload(&mpls_uc_offload); dev_add_offload(&mpls_mc_offload); return 0; }


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static void __exit mpls_gso_exit(void) { dev_remove_offload(&mpls_uc_offload); dev_remove_offload(&mpls_mc_offload); }


simon hormansimon horman21100.00%1100.00%

module_init(mpls_gso_init); module_exit(mpls_gso_exit); MODULE_DESCRIPTION("MPLS GSO support"); MODULE_AUTHOR("Simon Horman ("); MODULE_LICENSE("GPL");

Overall Contributors

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david s. millerdavid s. miller103.80%120.00%
daniel borkmanndaniel borkmann20.76%120.00%
florian westphalflorian westphal10.38%120.00%
pravin b shelarpravin b shelar10.38%120.00%
Directory: net/mpls
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