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comparison src/if-linux.c @ 5557:e65d193a1960 draft

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Linux: Support wireless IP roaming This is achieved by checking that the interface is wireless, IFF_UP and IFF_LOWER_UP are present, but IFF_RUNNING is missing. This gives exactly the same support as modern NetBSD when carrier loss is detected, but without the address verifications when the carrier comes back as that needs to be handled in the kernel. While IP setup is maintained, other configuration data is discarded. Note that this should be improved in the future. Thanks to Boris Krasnovskiy <borkra@gmail.com> for helping with this.
author Roy Marples <roy@marples.name>
date Sat, 12 Dec 2020 13:12:26 +0000
parents 605f7f9a20c0
children dd1e6f7adadd
comparison
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5556:99bfd2eb77ab 5557:e65d193a1960
513 { 513 {
514 514
515 return ifp->flags & IFF_RUNNING ? LINK_UP : LINK_DOWN; 515 return ifp->flags & IFF_RUNNING ? LINK_UP : LINK_DOWN;
516 } 516 }
517 517
518 bool
519 if_roaming(struct interface *ifp)
520 {
521
522 #ifdef IFF_LOWER_UP
523 if (!ifp->wireless ||
524 ifp->flags & IFF_RUNNING ||
525 (ifp->flags & (IFF_UP | IFF_LOWER_UP)) != (IFF_UP | IFF_LOWER_UP))
526 return false;
527 return true;
528 #else
529 return false;
530 #endif
531 }
532
518 int 533 int
519 if_getnetlink(struct dhcpcd_ctx *ctx, struct iovec *iov, int fd, int flags, 534 if_getnetlink(struct dhcpcd_ctx *ctx, struct iovec *iov, int fd, int flags,
520 int (*cb)(struct dhcpcd_ctx *, void *, struct nlmsghdr *), void *cbarg) 535 int (*cb)(struct dhcpcd_ctx *, void *, struct nlmsghdr *), void *cbarg)
521 { 536 {
522 struct sockaddr_nl nladdr = { .nl_pid = 0 }; 537 struct sockaddr_nl nladdr = { .nl_pid = 0 };