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Software for White Rabbit PTP Core
Commit fc1c9384 authored by Tomasz Wlostowski's avatar Tomasz Wlostowski
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dev/ep_pfilter.c: classify Streamer & Etherbone packets to different bins

parent 22745a58
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Showing with 5 additions and 21 deletions
dev/ep_pfilter.c
View file @ fc1c9384
......@@ -175,7 +175,7 @@ static void pfilter_logic3(int rd, int ra, pfilter_op_t op, int rb,
check_size();
check_reg_range(ra, 0, 31, "ra");
check_reg_range(rb, 0, 31, "rb");
check_reg_range(rc, 0, 31, "rb");
check_reg_range(rc, 0, 31, "rc");
check_reg_range(rd, 1, 31, "rd");
ir = (ra << 8) | (rb << 13) | (rc << 18) | ((rd & 0xf) << 3) |
......@@ -219,7 +219,6 @@ void pfilter_init_default()
pfilter_new();
pfilter_nop();
#ifdef CONFIG_ETHERBONE
pfilter_cmp(0, 0xffff, 0xffff, MOV, 1);
pfilter_cmp(1, 0xffff, 0xffff, AND, 1);
pfilter_cmp(2, 0xffff, 0xffff, AND, 1); /* r1 = 1 when dst mac is broadcast */
......@@ -232,6 +231,7 @@ void pfilter_init_default()
pfilter_cmp(6, 0x0800, 0xffff, MOV, 4); /* r4 = 1 when ethertype = IPv4 */
pfilter_cmp(6, 0x88f7, 0xffff, MOV, 5); /* r5 = 1 when ethertype = PTPv2 */
pfilter_cmp(6, 0x0806, 0xffff, MOV, 6); /* r6 = 1 when ethertype = ARP */
pfilter_cmp(6, 0xdbff, 0xffff, MOV, 9); /* r9 = 1 when ethertype = streamer */
/* Ethernet = 14 bytes, Offset to type in IP: 8 bytes = 22/2 = 11 */
pfilter_cmp(11, 0x0001, 0x00ff, MOV, 7); /* r7 = 1 when IP type = ICMP */
......@@ -249,29 +249,13 @@ void pfilter_init_default()
pfilter_logic2(15, 14, OR, 15); /* r15 = BOOTP/UDP/IP(unicast|broadcast) or ICMP/IP(unicast) or ARP(broadcast) or PTPv2 */
pfilter_logic3(20, 11, AND, 8, OR, 15); /* r16 = Something we accept */
pfilter_logic2(R_DROP, 20, NOT, 0); /* None match? drop */
pfilter_logic3(R_DROP, 20, OR, 9, NOT, 0); /* None match? drop */
pfilter_logic2(R_CLASS(7), 11, AND, 8); /* class 7: UDP/IP(unicast|broadcast) => external fabric */
pfilter_logic2(R_CLASS(6), 1, AND, 9); /* class 6: streamer broadcasts => external fabric */
pfilter_logic2(R_CLASS(0), 15, MOV, 0); /* class 0: ICMP/IP(unicast) or ARP(broadcast) or PTPv2 => PTP LM32 core */
pfilter_load();
#else /* not etherbone */
pfilter_new();
pfilter_nop();
pfilter_cmp(0, 0xffff, 0xffff, MOV, 1);
pfilter_cmp(1, 0xffff, 0xffff, AND, 1);
pfilter_cmp(2, 0xffff, 0xffff, AND, 1); /* r1 = 1 when dst mac is broadcast */
pfilter_cmp(0, 0x011b, 0xffff, MOV, 2);
pfilter_cmp(1, 0x1900, 0xffff, AND, 2);
pfilter_cmp(2, 0x0000, 0xffff, AND, 2); /* r2 = 1 when dst mac is PTP multicast (01:1b:19:00:00:00) */
pfilter_cmp(0, EP->MACH & 0xffff, 0xffff, MOV, 3);
pfilter_cmp(1, EP->MACL >> 16, 0xffff, AND, 3);
pfilter_cmp(2, EP->MACL & 0xffff, 0xffff, AND, 3); /* r3 = 1 when the packet is unicast to our own MAC */
pfilter_cmp(6, 0x88f7, 0xffff, MOV, 5); /* r5 = 1 when ethertype = PTPv2 */
pfilter_logic3(6, 3, OR, 2, AND, 5); /* r6 = PTPv2(multicast or unicast) */
pfilter_logic2(R_CLASS(7), 6, NOT, 0); /* class 7: not PTP => external fabric */
pfilter_logic2(R_CLASS(0), 6, MOV, 0); /* class 0: PTPv2 => PTP LM32 core */
pfilter_load();
#endif /* CONFIG_ETHERBONE */
}
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