diff options
| author |   Ulrich Hecht <uli+renesas@fpond.eu> | 2019-11-14 02:49:49 +0100 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2019-11-14 18:05:25 -0800 |
| commit | 15fb35fa9ff456b81159033eba6397fcee85e671 (patch) | |
| tree | 34dc1f18e53710b18eff36c0e4528724893dd93c /drivers/net/ethernet/renesas/ravb.h | |
| parent | tipc: add back tipc prefix to log messages (diff) | |
| download | linux-dev-15fb35fa9ff456b81159033eba6397fcee85e671.tar.xz linux-dev-15fb35fa9ff456b81159033eba6397fcee85e671.zip | |
ravb: implement MTU change while device is up
Pre-allocates buffers sufficient for the maximum supported MTU (2026) in
order to eliminate the possibility of resource exhaustion when changing the
MTU while the device is up.
Signed-off-by: Ulrich Hecht <uli+renesas@fpond.eu>
Reviewed-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/renesas/ravb.h')
| -rw-r--r-- | drivers/net/ethernet/renesas/ravb.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/net/ethernet/renesas/ravb.h b/drivers/net/ethernet/renesas/ravb.h index a9c89d5d8898..9f88b5db4f89 100644 --- a/drivers/net/ethernet/renesas/ravb.h +++ b/drivers/net/ethernet/renesas/ravb.h @@ -955,6 +955,8 @@ enum RAVB_QUEUE { #define NUM_RX_QUEUE 2 #define NUM_TX_QUEUE 2 +#define RX_BUF_SZ (2048 - ETH_FCS_LEN + sizeof(__sum16)) + /* TX descriptors per packet */ #define NUM_TX_DESC_GEN2 2 #define NUM_TX_DESC_GEN3 1 @@ -1018,7 +1020,6 @@ struct ravb_private { u32 dirty_rx[NUM_RX_QUEUE]; /* Producer ring indices */ u32 cur_tx[NUM_TX_QUEUE]; u32 dirty_tx[NUM_TX_QUEUE]; - u32 rx_buf_sz; /* Based on MTU+slack. */ struct napi_struct napi[NUM_RX_QUEUE]; struct work_struct work; /* MII transceiver section. */ |