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author | Stefano Brivio <sbrivio@redhat.com> | 2022-03-25 13:02:47 +0100 |
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committer | Stefano Brivio <sbrivio@redhat.com> | 2022-03-29 15:35:38 +0200 |
commit | bb708111833e23cafda1a5dd377e13400fa1e452 (patch) | |
tree | 253e39ce109dc80e3ab13b2773212a460e4b5234 /udp.h | |
parent | 3e4c2d10985027775683255e5d5fef5149ef8e0b (diff) | |
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treewide: Packet abstraction with mandatory boundary checks
Implement a packet abstraction providing boundary and size checks
based on packet descriptors: packets stored in a buffer can be queued
into a pool (without storage of its own), and data can be retrieved
referring to an index in the pool, specifying offset and length.
Checks ensure data is not read outside the boundaries of buffer and
descriptors, and that packets added to a pool are within the buffer
range with valid offset and indices.
This implies a wider rework: usage of the "queueing" part of the
abstraction mostly affects tap_handler_{passt,pasta}() functions and
their callees, while the "fetching" part affects all the guest or tap
facing implementations: TCP, UDP, ICMP, ARP, NDP, DHCP and DHCPv6
handlers.
Suggested-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
Diffstat (limited to 'udp.h')
-rw-r--r-- | udp.h | 6 |
1 files changed, 3 insertions, 3 deletions
@@ -10,9 +10,9 @@ void udp_sock_handler(struct ctx *c, union epoll_ref ref, uint32_t events, struct timespec *now); -int udp_tap_handler(struct ctx *c, int af, void *addr, - struct tap_l4_msg *msg, int count, struct timespec *now); -int udp_sock_init(struct ctx *c, struct timespec *now); +int udp_tap_handler(struct ctx *c, int af, void *addr, struct pool *p, + struct timespec *now); +int udp_sock_init(struct ctx *c); void udp_timer(struct ctx *c, struct timespec *ts); void udp_update_l2_buf(unsigned char *eth_d, unsigned char *eth_s, const uint32_t *ip_da); |