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Default branch: MAIN
Current tag: vmlocking-base
Revision 1.100 / (download) - annotate - [select for diffs], Wed Sep 19 04:33:43 2007 UTC (7 years, 2 months ago) by dyoung
CVS Tags: yamt-x86pmap-base4, yamt-x86pmap-base3, yamt-x86pmap-base2, yamt-x86pmap-base, yamt-x86pmap, vmlocking-base, jmcneill-base, bouyer-xenamd64-base2, bouyer-xenamd64-base, bouyer-xenamd64
Branch point for: mjf-devfs
Changes since 1.99: +57 -47 lines
Diff to previous 1.99 (colored)
1) Introduce a new socket option, (SOL_SOCKET, SO_NOHEADER), that tells a socket that it should both add a protocol header to tx'd datagrams and remove the header from rx'd datagrams: int onoff = 1, s = socket(...); setsockopt(s, SOL_SOCKET, SO_NOHEADER, &onoff); 2) Add an implementation of (SOL_SOCKET, SO_NOHEADER) for raw IPv4 sockets. 3) Reorganize the protocols' pr_ctloutput implementations a bit. Consistently return ENOPROTOOPT when an option is unsupported, and EINVAL if a supported option's arguments are incorrect. Reorganize the flow of code so that it's more clear how/when options are passed down the stack until they are handled. Shorten some pr_ctloutput staircases for readability. 4) Extract common mbuf code into subroutines, add new sockaddr methods, and introduce a new subroutine, fsocreate(), for reuse later; use it first in sys_socket(): struct mbuf *m_getsombuf(struct socket *so) Create an mbuf and make its owner the socket `so'. struct mbuf *m_intopt(struct socket *so, int val) Create an mbuf, make its owner the socket `so', put the int `val' into it, and set its length to sizeof(int). int fsocreate(..., int *fd) Create a socket, a la socreate(9), put the socket into the given LWP's descriptor table, return the descriptor at `fd' on success. void *sockaddr_addr(struct sockaddr *sa, socklen_t *slenp) const void *sockaddr_const_addr(const struct sockaddr *sa, socklen_t *slenp) Extract a pointer to the address part of a sockaddr. Write the length of the address part at `slenp', if `slenp' is not NULL. socklen_t sockaddr_getlen(const struct sockaddr *sa) Return the length of a sockaddr. This just evaluates to sa->sa_len. I only add this for consistency with code that appears in a portable userland library that I am going to import. const struct sockaddr *sockaddr_any(const struct sockaddr *sa) Return the "don't care" sockaddr in the same family as `sa'. This is the address a client should sobind(9) if it does not care the source address and, if applicable, the port et cetera that it uses. const void *sockaddr_anyaddr(const struct sockaddr *sa, socklen_t *slenp) Return the "don't care" sockaddr in the same family as `sa'. This is the address a client should sobind(9) if it does not care the source address and, if applicable, the port et cetera that it uses.
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