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netdev-dpdk: round up mbuf_size to cache_line_size

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Some pmd driver(e.g: vNIC thunderx PMD) want mbuf_size to be multiple of
cache_line_size. With out this fix, Netdev-dpdk initialization would
fail for those PMD.

Signed-off-by: Santosh Shukla <santosh.shukla@caviumnetworks.com>
Acked-by: Mark Kavanagh <mark.b.kavanagh@intel.com>
Tested-by: Mark Kavanagh <mark.b.kavanagh@intel.com>
Signed-off-by: Ben Pfaff <blp@ovn.org>
Acked-by: Ian Stokes <ian.stokes@intel.com>
This commit is contained in:
Santosh Shukla
2017-06-12 14:38:18 +00:00
committed by Ben Pfaff
parent 24aefb1845
commit 31b88c9751
1 changed files with 4 additions and 3 deletions
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7
lib/netdev-dpdk.c
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@@ -76,9 +76,10 @@ static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, 20);
#define MTU_TO_MAX_FRAME_LEN(mtu) ((mtu) + ETHER_HDR_MAX_LEN)
#define FRAME_LEN_TO_MTU(frame_len) ((frame_len) \
- ETHER_HDR_LEN - ETHER_CRC_LEN)
#define MBUF_SIZE(mtu) (MTU_TO_MAX_FRAME_LEN(mtu) \
+ sizeof(struct dp_packet) \
+ RTE_PKTMBUF_HEADROOM)
#define MBUF_SIZE(mtu) ROUND_UP((MTU_TO_MAX_FRAME_LEN(mtu) \
+ sizeof(struct dp_packet) \
+ RTE_PKTMBUF_HEADROOM), \
RTE_CACHE_LINE_SIZE)
#define NETDEV_DPDK_MBUF_ALIGN 1024
#define NETDEV_DPDK_MAX_PKT_LEN 9728