Function sballoc

freebsd/kern/uipc_sockbuf.c:264–290

* Adjust sockbuf state reflecting allocation of m. */

 * Adjust sockbuf state reflecting allocation of m.
 */
void
sballoc(struct sockbuf *sb, struct mbuf *m)
{

	SOCKBUF_LOCK_ASSERT(sb);

	sb->sb_ccc += m->m_len;

	if (sb->sb_fnrdy == NULL) {
		if (m->m_flags & M_NOTREADY)
			sb->sb_fnrdy = m;
		else
			sb->sb_acc += m->m_len;
	} else
		m->m_flags |= M_BLOCKED;

	if (m->m_type != MT_DATA && m->m_type != MT_OOBDATA)
		sb->sb_ctl += m->m_len;

	sb->sb_mbcnt += MSIZE;
	sb->sb_mcnt += 1;

	if (m->m_flags & M_EXT) {
		sb->sb_mbcnt += m->m_ext.ext_size;
		sb->sb_ccnt += 1;
	}
}

/*
 * Adjust sockbuf state reflecting freeing of m.