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net/af_xdp: fix integer overflow in umem size calculation

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The multiplication of two u32 integers may cause an overflow with large
mempool sizes.

Fixes: 74b46340e2d4 ("net/af_xdp: support shared UMEM")

Signed-off-by: Martin Weiser <martin.weiser@allegro-packets.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
This commit is contained in:
Martin Weiser 2020-10-29 12:25:42 +01:00 committed by Ferruh Yigit
parent 7e608a971d
commit 97671617ec
1 changed files with 2 additions and 1 deletions
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drivers/net/af_xdp/rte_eth_af_xdp.c
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@ -968,7 +968,8 @@ xsk_umem_info *xdp_umem_configure(struct pmd_internals *internals,
umem->mb_pool = mb_pool;
base_addr = (void *)get_base_addr(mb_pool, &align);
umem_size = mb_pool->populated_size * usr_config.frame_size +
umem_size = (uint64_t)mb_pool->populated_size *
(uint64_t)usr_config.frame_size +
align;
ret = xsk_umem__create(&umem->umem, base_addr, umem_size,