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net/eth: Report if headers are actually present

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The values returned by eth_get_protocols() are used to perform RSS,
checksumming and segmentation. Even when a packet signals the use of the
protocols which these operations can be applied to, the headers for them
may not be present because of too short packet or fragmentation, for
example. In such a case, the operations cannot be applied safely.

Report the presence of headers instead of whether the use of the
protocols are indicated with eth_get_protocols(). This also makes
corresponding changes to the callers of eth_get_protocols() to match
with its new signature and to remove redundant checks for fragmentation.

Fixes: 75020a7021 ("Common definitions for VMWARE devices")
Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
This commit is contained in:
Akihiko Odaki 2023-02-23 19:20:17 +09:00 • committed by Jason Wang
parent 47399506dc
commit 69ff5ef847
8 changed files with 148 additions and 164 deletions
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12
hw/net/net_rx_pkt.h
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@ -66,15 +66,15 @@ void net_rx_pkt_set_protocols(struct NetRxPkt *pkt, const void *data,
* fetches packet analysis results
*
* @pkt: packet
* @isip4: whether the packet given is IPv4
* @isip6: whether the packet given is IPv6
* @isudp: whether the packet given is UDP
* @istcp: whether the packet given is TCP
* @hasip4: whether the packet has an IPv4 header
* @hasip6: whether the packet has an IPv6 header
* @hasudp: whether the packet has a UDP header
* @hastcp: whether the packet has a TCP header
*
*/
void net_rx_pkt_get_protocols(struct NetRxPkt *pkt,
bool *isip4, bool *isip6,
bool *isudp, bool *istcp);
bool *hasip4, bool *hasip6,
bool *hasudp, bool *hastcp);
/**
* fetches L3 header offset