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authorEric Dumazet <edumazet@google.com>2017-02-08 02:37:15 +0300
committerDavid S. Miller <davem@davemloft.net>2017-02-08 22:38:18 +0300
commit97e219b7c1f75b14b29abe28ad53e8709e8d15e5 (patch)
treeffce868c8d15defa68ee441282782f2bacabf80a /include/net/gro_cells.h
parent40710cf9ad234778eb8b10ef07d922f435005cf7 (diff)
downloadlinux-97e219b7c1f75b14b29abe28ad53e8709e8d15e5.tar.xz
gro_cells: move to net/core/gro_cells.c
We have many gro cells users, so lets move the code to avoid duplication. This creates a CONFIG_GRO_CELLS option. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/gro_cells.h')
-rw-r--r--include/net/gro_cells.h86
1 files changed, 4 insertions, 82 deletions
diff --git a/include/net/gro_cells.h b/include/net/gro_cells.h
index 2a1abbf8da74..fcaf8f479130 100644
--- a/include/net/gro_cells.h
+++ b/include/net/gro_cells.h
@@ -5,92 +5,14 @@
#include <linux/slab.h>
#include <linux/netdevice.h>
-struct gro_cell {
- struct sk_buff_head napi_skbs;
- struct napi_struct napi;
-};
+struct gro_cell;
struct gro_cells {
struct gro_cell __percpu *cells;
};
-static inline int gro_cells_receive(struct gro_cells *gcells, struct sk_buff *skb)
-{
- struct gro_cell *cell;
- struct net_device *dev = skb->dev;
-
- if (!gcells->cells || skb_cloned(skb) || !(dev->features & NETIF_F_GRO))
- return netif_rx(skb);
-
- cell = this_cpu_ptr(gcells->cells);
-
- if (skb_queue_len(&cell->napi_skbs) > netdev_max_backlog) {
- atomic_long_inc(&dev->rx_dropped);
- kfree_skb(skb);
- return NET_RX_DROP;
- }
-
- __skb_queue_tail(&cell->napi_skbs, skb);
- if (skb_queue_len(&cell->napi_skbs) == 1)
- napi_schedule(&cell->napi);
- return NET_RX_SUCCESS;
-}
-
-/* called under BH context */
-static inline int gro_cell_poll(struct napi_struct *napi, int budget)
-{
- struct gro_cell *cell = container_of(napi, struct gro_cell, napi);
- struct sk_buff *skb;
- int work_done = 0;
-
- while (work_done < budget) {
- skb = __skb_dequeue(&cell->napi_skbs);
- if (!skb)
- break;
- napi_gro_receive(napi, skb);
- work_done++;
- }
-
- if (work_done < budget)
- napi_complete_done(napi, work_done);
- return work_done;
-}
-
-static inline int gro_cells_init(struct gro_cells *gcells, struct net_device *dev)
-{
- int i;
-
- gcells->cells = alloc_percpu(struct gro_cell);
- if (!gcells->cells)
- return -ENOMEM;
-
- for_each_possible_cpu(i) {
- struct gro_cell *cell = per_cpu_ptr(gcells->cells, i);
-
- __skb_queue_head_init(&cell->napi_skbs);
-
- set_bit(NAPI_STATE_NO_BUSY_POLL, &cell->napi.state);
-
- netif_napi_add(dev, &cell->napi, gro_cell_poll, 64);
- napi_enable(&cell->napi);
- }
- return 0;
-}
-
-static inline void gro_cells_destroy(struct gro_cells *gcells)
-{
- int i;
-
- if (!gcells->cells)
- return;
- for_each_possible_cpu(i) {
- struct gro_cell *cell = per_cpu_ptr(gcells->cells, i);
-
- netif_napi_del(&cell->napi);
- __skb_queue_purge(&cell->napi_skbs);
- }
- free_percpu(gcells->cells);
- gcells->cells = NULL;
-}
+int gro_cells_receive(struct gro_cells *gcells, struct sk_buff *skb);
+int gro_cells_init(struct gro_cells *gcells, struct net_device *dev);
+void gro_cells_destroy(struct gro_cells *gcells);
#endif