From d0c2ee99e54c0fd76938236e863ad7d3992f044f Mon Sep 17 00:00:00 2001 From: Ben Hutchings Date: Tue, 20 Aug 2013 15:47:12 +0100 Subject: [PATCH] sfc: Introduce and use MCDI_CTL_SDU_LEN_MAX_V1 macro for Siena-specific code The MCDI version 2 protocol supports larger payloads, but will not be implemented on Siena. Signed-off-by: Ben Hutchings --- drivers/net/ethernet/sfc/mcdi_pcol.h | 4 +++- drivers/net/ethernet/sfc/siena_sriov.c | 7 ++++--- 2 files changed, 7 insertions(+), 4 deletions(-) diff --git a/drivers/net/ethernet/sfc/mcdi_pcol.h b/drivers/net/ethernet/sfc/mcdi_pcol.h index c5c9747861ba..5f2846c82f24 100644 --- a/drivers/net/ethernet/sfc/mcdi_pcol.h +++ b/drivers/net/ethernet/sfc/mcdi_pcol.h @@ -100,7 +100,9 @@ #define MCDI_HEADER_XFLAGS_EVREQ 0x01 /* Maximum number of payload bytes */ -#define MCDI_CTL_SDU_LEN_MAX 0xfc +#define MCDI_CTL_SDU_LEN_MAX_V1 0xfc + +#define MCDI_CTL_SDU_LEN_MAX MCDI_CTL_SDU_LEN_MAX_V1 /* The MC can generate events for two reasons: * - To complete a shared memory request if XFLAGS_EVREQ was set diff --git a/drivers/net/ethernet/sfc/siena_sriov.c b/drivers/net/ethernet/sfc/siena_sriov.c index 8e46fac65536..c376e90c4c37 100644 --- a/drivers/net/ethernet/sfc/siena_sriov.c +++ b/drivers/net/ethernet/sfc/siena_sriov.c @@ -248,11 +248,11 @@ static int efx_sriov_memcpy(struct efx_nic *efx, struct efx_memcpy_req *req, mb(); /* Finish writing source/reading dest before DMA starts */ used = MC_CMD_MEMCPY_IN_LEN(count); - if (WARN_ON(used > MCDI_CTL_SDU_LEN_MAX)) + if (WARN_ON(used > MCDI_CTL_SDU_LEN_MAX_V1)) return -ENOBUFS; /* Allocate room for the largest request */ - inbuf = kzalloc(MCDI_CTL_SDU_LEN_MAX, GFP_KERNEL); + inbuf = kzalloc(MCDI_CTL_SDU_LEN_MAX_V1, GFP_KERNEL); if (inbuf == NULL) return -ENOMEM; @@ -270,7 +270,8 @@ static int efx_sriov_memcpy(struct efx_nic *efx, struct efx_memcpy_req *req, from_lo = (u32)req->from_addr; from_hi = (u32)(req->from_addr >> 32); } else { - if (WARN_ON(used + req->length > MCDI_CTL_SDU_LEN_MAX)) { + if (WARN_ON(used + req->length > + MCDI_CTL_SDU_LEN_MAX_V1)) { rc = -ENOBUFS; goto out; } -- 2.30.2