diff options
Diffstat (limited to 'dpdk/dpdk-2.2.0_patches/0020-enic-fix-Rx-descriptor-limit.patch')
| -rw-r--r-- | dpdk/dpdk-2.2.0_patches/0020-enic-fix-Rx-descriptor-limit.patch | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/dpdk/dpdk-2.2.0_patches/0020-enic-fix-Rx-descriptor-limit.patch b/dpdk/dpdk-2.2.0_patches/0020-enic-fix-Rx-descriptor-limit.patch new file mode 100644 index 00000000..f2fb1245 --- /dev/null +++ b/dpdk/dpdk-2.2.0_patches/0020-enic-fix-Rx-descriptor-limit.patch @@ -0,0 +1,61 @@ +commit 65ca78fdf9a684743bfca278cf1fcfea4603931d +Author: Nelson Escobar <neescoba@cisco.com> +Date: Fri Mar 18 11:33:34 2016 -0700 + + enic: fix Rx descriptor limit + + On initialization, the rq descriptor count was set to the limit + of the vic. When the requested number of rx descriptors was + less than this count, enic_alloc_rq() was incorrectly setting + the count to the lower value. This results in later calls to + enic_alloc_rq() incorrectly using the lower value as the adapter + limit. + + Fixes: fefed3d1e62c ("enic: new driver") + + Signed-off-by: Nelson Escobar <neescoba@cisco.com> + Reviewed-by: John Daley <johndale@cisco.com> + +diff --git a/drivers/net/enic/enic_main.c b/drivers/net/enic/enic_main.c +index e30672c..2f79cf0 100644 +--- a/drivers/net/enic/enic_main.c ++++ b/drivers/net/enic/enic_main.c +@@ -524,24 +524,22 @@ int enic_alloc_rq(struct enic *enic, uint16_t queue_idx, + "policy. Applying the value in the adapter "\ + "policy (%d).\n", + queue_idx, nb_desc, enic->config.rq_desc_count); +- } else if (nb_desc != enic->config.rq_desc_count) { +- enic->config.rq_desc_count = nb_desc; +- dev_info(enic, +- "RX Queues - effective number of descs:%d\n", +- nb_desc); ++ nb_desc = enic->config.rq_desc_count; + } ++ dev_info(enic, "RX Queues - effective number of descs:%d\n", ++ nb_desc); + } + + /* Allocate queue resources */ + rc = vnic_rq_alloc(enic->vdev, rq, queue_idx, +- enic->config.rq_desc_count, sizeof(struct rq_enet_desc)); ++ nb_desc, sizeof(struct rq_enet_desc)); + if (rc) { + dev_err(enic, "error in allocation of rq\n"); + goto err_exit; + } + + rc = vnic_cq_alloc(enic->vdev, &enic->cq[queue_idx], queue_idx, +- socket_id, enic->config.rq_desc_count, ++ socket_id, nb_desc, + sizeof(struct cq_enet_rq_desc)); + if (rc) { + dev_err(enic, "error in allocation of cq for rq\n"); +@@ -550,7 +548,7 @@ int enic_alloc_rq(struct enic *enic, uint16_t queue_idx, + + /* Allocate the mbuf ring */ + rq->mbuf_ring = (struct rte_mbuf **)rte_zmalloc_socket("rq->mbuf_ring", +- sizeof(struct rte_mbuf *) * enic->config.rq_desc_count, ++ sizeof(struct rte_mbuf *) * nb_desc, + RTE_CACHE_LINE_SIZE, rq->socket_id); + + if (rq->mbuf_ring != NULL) |