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kni: fix crash on userspace VA for segmented packets

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When IOVA=VA, address translation for segmented packets is wrong, it
assumes the address in the mbuf->next is physical address, not VA
address.

Fixing the address translation to work both PA & VA mode.

Fixes: e73831dc6c ("kni: support userspace VA")
Cc: stable@dpdk.org

Signed-off-by: Ferruh Yigit <ferruh.yigit@intel.com>
Acked-by: Ajit Khaparde <ajit.khaparde@broadcom.com>
This commit is contained in:
Ferruh Yigit 2021-06-22 13:29:56 +01:00 committed by Thomas Monjalon
parent 0db3d5551a
commit 9b83a7ed2a
1 changed files with 3 additions and 3 deletions
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6
kernel/linux/kni/kni_net.c
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@ -245,7 +245,7 @@ kni_fifo_trans_pa2va(struct kni_dev *kni,
break;
prev_kva = kva;
kva = pa2kva(kva->next);
kva = get_kva(kni, kva->next);
/* Convert physical address to virtual address */
prev_kva->next = pa2va(prev_kva->next, kva);
}
@ -422,7 +422,7 @@ kni_net_rx_normal(struct kni_dev *kni)
break;
prev_kva = kva;
kva = pa2kva(kva->next);
kva = get_kva(kni, kva->next);
data_kva = kva2data_kva(kva);
/* Convert physical address to virtual address */
prev_kva->next = pa2va(prev_kva->next, kva);
@ -501,7 +501,7 @@ kni_net_rx_lo_fifo(struct kni_dev *kni)
kni->va[i] = pa2va(kni->pa[i], kva);
while (kva->next) {
next_kva = pa2kva(kva->next);
next_kva = get_kva(kni, kva->next);
/* Convert physical address to virtual address */
kva->next = pa2va(kva->next, next_kva);
kva = next_kva;