diff options
| author | Shailend Chand <shailend@google.com> | 2024-05-01 23:25:41 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2024-05-05 14:35:33 +0100 |
| commit | dcecfcf21bd139f90f94f630ae86122a98267685 (patch) | |
| tree | 00dfc182a24bb4096c44fe48e0edf13a240ebd20 /drivers/net/ethernet/google/gve | |
| parent | 087b24de5c825c53f15a9481b94f757223c20610 (diff) | |
gve: Make the GQ RX free queue funcs idempotent
Although this is not fixing any existing double free bug, making these
functions idempotent allows for a simpler implementation of future ndo
hooks that act on a single queue.
Tested-by: Mina Almasry <almasrymina@google.com>
Reviewed-by: Praveen Kaligineedi <pkaligineedi@google.com>
Reviewed-by: Harshitha Ramamurthy <hramamurthy@google.com>
Signed-off-by: Shailend Chand <shailend@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/google/gve')
| -rw-r--r-- | drivers/net/ethernet/google/gve/gve_rx.c | 29 |
1 files changed, 19 insertions, 10 deletions
diff --git a/drivers/net/ethernet/google/gve/gve_rx.c b/drivers/net/ethernet/google/gve/gve_rx.c index 9b56e89c4f43..0a3f88170411 100644 --- a/drivers/net/ethernet/google/gve/gve_rx.c +++ b/drivers/net/ethernet/google/gve/gve_rx.c @@ -30,6 +30,9 @@ static void gve_rx_unfill_pages(struct gve_priv *priv, u32 slots = rx->mask + 1; int i; + if (!rx->data.page_info) + return; + if (rx->data.raw_addressing) { for (i = 0; i < slots; i++) gve_rx_free_buffer(&priv->pdev->dev, &rx->data.page_info[i], @@ -69,20 +72,26 @@ static void gve_rx_free_ring_gqi(struct gve_priv *priv, struct gve_rx_ring *rx, int idx = rx->q_num; size_t bytes; - bytes = sizeof(struct gve_rx_desc) * cfg->ring_size; - dma_free_coherent(dev, bytes, rx->desc.desc_ring, rx->desc.bus); - rx->desc.desc_ring = NULL; + if (rx->desc.desc_ring) { + bytes = sizeof(struct gve_rx_desc) * cfg->ring_size; + dma_free_coherent(dev, bytes, rx->desc.desc_ring, rx->desc.bus); + rx->desc.desc_ring = NULL; + } - dma_free_coherent(dev, sizeof(*rx->q_resources), - rx->q_resources, rx->q_resources_bus); - rx->q_resources = NULL; + if (rx->q_resources) { + dma_free_coherent(dev, sizeof(*rx->q_resources), + rx->q_resources, rx->q_resources_bus); + rx->q_resources = NULL; + } gve_rx_unfill_pages(priv, rx, cfg); - bytes = sizeof(*rx->data.data_ring) * slots; - dma_free_coherent(dev, bytes, rx->data.data_ring, - rx->data.data_bus); - rx->data.data_ring = NULL; + if (rx->data.data_ring) { + bytes = sizeof(*rx->data.data_ring) * slots; + dma_free_coherent(dev, bytes, rx->data.data_ring, + rx->data.data_bus); + rx->data.data_ring = NULL; + } kvfree(rx->qpl_copy_pool); rx->qpl_copy_pool = NULL; |