From d05866b416b2ed89977fee0842bb93ff96609fcf Mon Sep 17 00:00:00 2001 From: Michael Chan Date: Wed, 22 May 2019 19:12:56 -0400 Subject: [PATCH] bnxt_en: Reduce memory usage when running in kdump kernel. [ Upstream commit d629522e1d66561f38e5c8d4f52bb6d254ec0707 ] Skip RDMA context memory allocations, reduce to 1 ring, and disable TPA when running in the kdump kernel. Without this patch, the driver fails to initialize with memory allocation errors when running in a typical kdump kernel. Fixes: cf6daed098d1 ("bnxt_en: Increase context memory allocations on 57500 chips for RDMA.") Signed-off-by: Michael Chan Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman --- drivers/net/ethernet/broadcom/bnxt/bnxt.c | 4 ++-- drivers/net/ethernet/broadcom/bnxt/bnxt.h | 4 +++- 2 files changed, 5 insertions(+), 3 deletions(-) diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c index 0229cb5243262..300dbfdd4ae81 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c @@ -6338,7 +6338,7 @@ static int bnxt_alloc_ctx_mem(struct bnxt *bp) if (!ctx || (ctx->flags & BNXT_CTX_FLAG_INITED)) return 0; - if (bp->flags & BNXT_FLAG_ROCE_CAP) { + if ((bp->flags & BNXT_FLAG_ROCE_CAP) && !is_kdump_kernel()) { pg_lvl = 2; extra_qps = 65536; extra_srqs = 8192; @@ -10279,7 +10279,7 @@ static int bnxt_set_dflt_rings(struct bnxt *bp, bool sh) if (sh) bp->flags |= BNXT_FLAG_SHARED_RINGS; - dflt_rings = netif_get_num_default_rss_queues(); + dflt_rings = is_kdump_kernel() ? 1 : netif_get_num_default_rss_queues(); /* Reduce default rings on multi-port cards so that total default * rings do not exceed CPU count. */ diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.h b/drivers/net/ethernet/broadcom/bnxt/bnxt.h index 4d8b893344723..c09b20b083959 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.h +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.h @@ -20,6 +20,7 @@ #include #include +#include #include #include #include @@ -1367,7 +1368,8 @@ struct bnxt { #define BNXT_CHIP_TYPE_NITRO_A0(bp) ((bp)->flags & BNXT_FLAG_CHIP_NITRO_A0) #define BNXT_RX_PAGE_MODE(bp) ((bp)->flags & BNXT_FLAG_RX_PAGE_MODE) #define BNXT_SUPPORTS_TPA(bp) (!BNXT_CHIP_TYPE_NITRO_A0(bp) && \ - !(bp->flags & BNXT_FLAG_CHIP_P5)) + !(bp->flags & BNXT_FLAG_CHIP_P5) && \ + !is_kdump_kernel()) /* Chip class phase 5 */ #define BNXT_CHIP_P5(bp) \ -- 2.47.2