mlx4_en: Remove remnants of LRO support

Commit fa37a9586f92051de03a13e55e5ec3880bb6783e ('mlx4_en: Moving to
work with GRO') left behind the Kconfig depends/select, some dead
code and comments referring to LRO.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Acked-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

3 files changed, 4 insertions, 25 deletions

diff --git a/drivers/net/ethernet/mellanox/mlx4/Kconfig b/drivers/net/ethernet/mellanox/mlx4/Kconfig
index 5f027f95cc8..eb520ab6401 100644
--- a/drivers/net/ethernet/mellanox/mlx4/Kconfig
+++ b/drivers/net/ethernet/mellanox/mlx4/Kconfig
@@ -4,9 +4,8 @@
 
 config MLX4_EN
         tristate "Mellanox Technologies 10Gbit Ethernet support"
-        depends on PCI && INET
+        depends on PCI
         select MLX4_CORE
-        select INET_LRO
         ---help---
           This driver supports Mellanox Technologies ConnectX Ethernet
           devices.
diff --git a/drivers/net/ethernet/mellanox/mlx4/en_rx.c b/drivers/net/ethernet/mellanox/mlx4/en_rx.c
index 5aba5ecdf1e..f76c9671f36 100644
--- a/drivers/net/ethernet/mellanox/mlx4/en_rx.c
+++ b/drivers/net/ethernet/mellanox/mlx4/en_rx.c
@@ -630,7 +630,7 @@ int mlx4_en_process_rx_cq(struct net_device *dev, struct mlx4_en_cq *cq, int bud
                         if ((cqe->status & cpu_to_be16(MLX4_CQE_STATUS_IPOK)) &&
                             (cqe->checksum == cpu_to_be16(0xffff))) {
                                 ring->csum_ok++;
-                                /* This packet is eligible for LRO if it is:
+                                /* This packet is eligible for GRO if it is:
                                  * - DIX Ethernet (type interpretation)
                                  * - TCP/IP (v4)
                                  * - without IP options
@@ -667,7 +667,7 @@ int mlx4_en_process_rx_cq(struct net_device *dev, struct mlx4_en_cq *cq, int bud
                                         goto next;
                                 }
 
-                                /* LRO not possible, complete processing here */
+                                /* GRO not possible, complete processing here */
                                 ip_summed = CHECKSUM_UNNECESSARY;
                         } else {
                                 ip_summed = CHECKSUM_NONE;
@@ -710,11 +710,8 @@ next:
                 ++cq->mcq.cons_index;
                 index = (cq->mcq.cons_index) & ring->size_mask;
                 cqe = &cq->buf[index];
-                if (++polled == budget) {
-                        /* We are here because we reached the NAPI budget -
-                         * flush only pending LRO sessions */
+                if (++polled == budget)
                         goto out;
-                }
         }
 
 out:
diff --git a/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h b/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h
index 8a5e70d6889..d3eba8bcce1 100644
--- a/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h
+++ b/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h
@@ -95,8 +95,6 @@
 #define MLX4_EN_ALLOC_SIZE      PAGE_ALIGN(16384)
 #define MLX4_EN_ALLOC_ORDER     get_order(MLX4_EN_ALLOC_SIZE)
 
-#define MLX4_EN_MAX_LRO_DESCRIPTORS     32
-
 /* Receive fragment sizes; we use at most 4 fragments (for 9600 byte MTU
  * and 4K allocations) */
 enum {
@@ -290,21 +288,6 @@ struct mlx4_en_rx_ring {
         unsigned long csum_none;
 };
 
-
-static inline int mlx4_en_can_lro(__be16 status)
-{
-        return (status & cpu_to_be16(MLX4_CQE_STATUS_IPV4       |
-                                     MLX4_CQE_STATUS_IPV4F      |
-                                     MLX4_CQE_STATUS_IPV6       |
-                                     MLX4_CQE_STATUS_IPV4OPT    |
-                                     MLX4_CQE_STATUS_TCP        |
-                                     MLX4_CQE_STATUS_UDP        |
-                                     MLX4_CQE_STATUS_IPOK)) ==
-                cpu_to_be16(MLX4_CQE_STATUS_IPV4 |
-                            MLX4_CQE_STATUS_IPOK |
-                            MLX4_CQE_STATUS_TCP);
-}
-
 struct mlx4_en_cq {
         struct mlx4_cq          mcq;
         struct mlx4_hwq_resources wqres;